RS 485 Repeater - Siemens
RS 485 Repeater 1Preface2IntroductionSIMATICRS 485 ical dataManual02/2011A5E03382072-017Dimension drawings
Legal informationLegal informationWarning notice systemThis manual contains notices you have to observe in order to ensure your personal safety, as well as to preventdamage to property. The notices referring to your personal safety are highlighted in the manual by a safety alertsymbol, notices referring only to property damage have no safety alert symbol. These notices shown below aregraded according to the degree of danger.DANGERindicates that death or severe personal injury will result if proper precautions are not taken.WARNINGindicates that death or severe personal injury may result if proper precautions are not taken.CAUTIONwith a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.CAUTIONwithout a safety alert symbol, indicates that property damage can result if proper precautions are not taken.NOTICEindicates that an unintended result or situation can occur if the corresponding information is not taken intoaccount.If more than one degree of danger is present, the warning notice representing the highest degree of danger willbe used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating toproperty damage.Qualified PersonnelThe product/system described in this documentation may be operated only by personnel qualified for the specifictask in accordance with the relevant documentation for the specific task, in particular its warning notices andsafety instructions. Qualified personnel are those who, based on their training and experience, are capable ofidentifying risks and avoiding potential hazards when working with these products/systems.Proper use of Siemens productsNote the following:WARNINGSiemens products may only be used for the applications described in the catalog and in the relevant technicaldocumentation. If products and components from other manufacturers are used, these must be recommendedor approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation andmaintenance are required to ensure that the products operate safely and without any problems. The permissibleambient conditions must be adhered to. The information in the relevant documentation must be observed.TrademarksAll names identified by are registered trademarks of the Siemens AG. The remaining trademarks in thispublication may be trademarks whose use by third parties for their own purposes could violate the rights of theowner.Disclaimer of LiabilityWe have reviewed the contents of this publication to ensure consistency with the hardware and softwaredescribed. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, theinformation in this publication is reviewed regularly and any necessary corrections are included in subsequenteditions.Siemens AGIndustry SectorPostfach 48 4890026 NÜRNBERGGERMANYA5E03382072-01 03/2011Copyright Siemens AG 2011.Technical data subject to change
Table of contents1Preface . 52Introduction. 73Description. 943.1Area of application and properties .93.2Design of the RS 485 repeater .11Installation . 134.1567Installing and uninstalling the RS 485 repeater .13Connecting . 175.1RS 485 Repeater in ungrounded and grounded operation.175.2Connecting the power supply.205.3Connecting the bus cable .215.4Configuration options with the RS 485 repeater .22Technical data . 256.16.1.16.1.26.1.36.1.46.1.5General technical data .25Standards and approvals .25Electromagnetic Compatibility.30Shipping and storage conditions for modules and backup batteries .32Mechanical and ambient climatic conditions for S7-300 operation.33Specification of dielectric tests, protection class, degree of protection, and rated voltageof S7-300.356.2Technical data the RS 485 Repeater.36Dimension drawings . 397.1Dimension drawings.39Glossary . 41Index. 45RS 485 RepeaterManual, 02/2011, A5E03382072-013
Table of contentsRS 485 Repeater4Manual, 02/2011, A5E03382072-01
1PrefaceIntroductionThis manual describes the RS 485 repeater.It supports you during the configuration, installation and commissioning. It is intended forpeople who work in the following areas: the configuring, commissioning and servicing ofautomation systems.Basic knowledge requiredThis manual presumes general knowledge in the field of automation engineering.Range of validity of this manualThe manual is valid for the RS 485 repeater with the order number 6ES7972-0AA02-0XA0.Additional supportIf you have any questions relating to the products described in this product information anddo not find the answers in this document, please contact your local Siemens representativeon the Internet (http://www.automation.siemens.com/partner/).A guide to the technical documentation provided for the various SIMATIC products andsystems is available on the Internet The online catalog and ordering systems are available on the echnical SupportYou can contact Technical Support for all Industry Automation products by means of theInternet Web form for the Support Request on the -request).Additional information about Siemens Technical Support is available on the ).RS 485 RepeaterManual, 02/2011, A5E03382072-015
PrefaceService & Support on the InternetIn addition to our documentation, we offer a comprehensive knowledge base. On the &support).There you will find: Our Newsletter, which constantly provides you with the latest information about yourproducts. The right documentation for you using our Service & Support search engine. The bulletin board, a worldwide knowledge exchange for users and experts. Your local contact for Automation & Drives in our contact database. Information about on-site services, repairs, spare parts, and lots more.RS 485 Repeater6Manual, 02/2011, A5E03382072-01
Introduction2This chapterThis chapter describes the RS 485 repeater in detail.This includes: Description of the RS 485 repeater The maximum cable lengths between two RS 485 repeaters The functions of the various operating elements and terminals Mounting and removing information about grounded and nongrounded operation Connecting the power supply and bus line Technical specifications and the block diagram Dimension drawingsDiagnostic RepeaterCompared to the RS 485 repeater, the Diagnostic Repeater has new characteristics:Diagnostic function and modeling as the DP slave. For additional information, refer to theDiagnostic Repeater for PROFIBUS DP manual on the view/en/7915183).RS 485 RepeaterManual, 02/2011, A5E03382072-017
IntroductionRS 485 Repeater8Manual, 02/2011, A5E03382072-01
3Description3.1Area of application and propertiesOrder number6ES7972-0AA02-0XA0What is the RS 485 repeater?The RS 485 repeater amplifies data signals (amplitude, edge slope and signal width) on buslines and couples segments.Application of the RS 485 RepeaterThe RS 485 repeater connects two PROFIBUS or MPI segments using RS 485 technologywith maximum 32 nodes. It enables transfer rates from 9.6 kbps to 12 Mbps.You need an RS 485 repeater if: More than 32 nodes (maximum 127, including repeaters) are connected to the bus Segments are operated ungrounded on the bus (electrical isolation of segments) The maximum cable length of a bus segment is exceeded (see the table below) Help is required during the commissioning– Switch for disconnecting segments– Display of bus activity– Disconnecting a bus segment in the case of incorrectly inserted terminating resistors The signals are to be regenerated in amplitude and timeTable 3- 1Maximum cable length of a bus segmentTransmission rateMax. cable length of a bus segment (in m)9.6 to 187.5 kbps1000500 kbps4001.5 Mbps2003 to 12 Mbps100RS 485 RepeaterManual, 02/2011, A5E03382072-019
Description3.1 Area of application and propertiesRulesIf you set up a PROFIBUS network with RS 485 repeaters: The number of RS 485 repeaters in series must be configured in STEP 7. Up to nine RS 485 repeaters may be connected in series. The maximum cable length between two nodes with RS 485 repeater may not exceed thevalues listed in the table below.Table 3- 2Maximum cable length between two RS 485 repeatersTransmission rateMaximum cable length between 2 nodes (in m) with RS 485 repeater9.6 to 187.5 kbps10000500 kbps40001.5 Mbps20003 to 12 Mbps1000RS 485 Repeater10Manual, 02/2011, A5E03382072-01
Description3.2 Design of the RS 485 repeater3.2Design of the RS 485 repeaterThe following table shows the design and functions of the RS 485 repeater.Table 3- 3Design and functions of the RS 485 repeaterDesign of the repeaterno.Function①Connection for the RS 485 repeater power supply (pin "M5.2" is theground reference, if you want to measure the voltage differencebetween terminals "A2" and "B2").②Shield clamp for the strain relief and grounding of the bus cable of bussegments 1 or 2③Terminals for the bus cable of bus segment 1④Switches for terminating resistance for bus segment 1⑤LED for bus segment 1⑥OFF switch ⑦LED for bus segment 2 ⑧Switches for terminating resistance for bus segment 2 ⑨LED 24 V supply voltage⑩Terminals for the bus cable of bus segment 2⑪Slide for mounting and removing the RS 485 repeater on the standardmounting rail⑫Interface for PG/OP on bus segment 1 / 0s3( 0 % % 21 6 '3 3* 2))2302'('3 216 '& 9; 56 5(3( 7(5 % % ( isolate bus segments from each other, for example, forcommissioning) (6 ; NoteTerminal M 5.2 of the power supply serves as ground reference for signal measurements inthe event of a fault and should not be wired.RS 485 RepeaterManual, 02/2011, A5E03382072-0111
Description3.2 Design of the RS 485 repeaterRS 485 Repeater12Manual, 02/2011, A5E03382072-01
Installation4.14Installing and uninstalling the RS 485 repeaterOverviewYou can install the RS 485 repeater as follows: On an S7-300 mounting rail On a standard mounting rail (order number 6ES5710-8MA.)Installation on an S7-300 mounting railTo install the RS 485 repeater on an S7-300 mounting rail, the catch on the rear of theRS 485 repeater must first be removed (see the following figure):1. Insert a screwdriver below the tongue of the catch (1) and2. Push the screwdriver towards the rear of the module (2). Hold the screwdriver in thisposition!Result: The catch of the RS 485 repeater is released.3. Using your free hand lift the catch up as far as it will go and then remove the catch (3).Result: The catch is removed from the RS 485 repeater.4. Fit the RS 485 repeater into the S7300 mounting rail (4).RS 485 RepeaterManual, 02/2011, A5E03382072-0113
Installation4.1 Installing and uninstalling the RS 485 repeater5. Push it towards the back as far as it will go (5).6. Tighten the securing screw with a torque of 80 to 110 Ncm (6).Rear:Front:421356Figure 4-180 to 110 NcmInstalling the RS 485 repeater on an S7-300 mounting railRemoving the repeater from an S7-300 mounting railTo remove the RS 485 repeater from the S7-300 mounting rail:1. Loosen the fixing screw of the RS 485 repeater (1) and2. Pull the RS 485 repeater up and out (2).1Figure 4-22Removing the RS 485 repeater from the S7-300 mounting railRS 485 Repeater14Manual, 02/2011, A5E03382072-01
Installation4.1 Installing and uninstalling the RS 485 repeaterInstallation on a standard mounting railTo be able to install the repeater on a standard mounting rail, the catch must be present onthe rear of the RS 485 repeater:1. Fit the RS 485 repeater into the standard mounting rail from above and2. Push it towards the back until the catch locks it in place.Removal from the standard mounting railTo remove the RS 485 repeater from the standard mounting rail:1. Press down the catch on the bottom of the RS 485 repeater using a screwdriver and2. Pull the RS 485 repeater upwards and out to remove it from the standard mounting rail.RS 485 RepeaterManual, 02/2011, A5E03382072-0115
Installation4.1 Installing and uninstalling the RS 485 repeaterRS 485 Repeater16Manual, 02/2011, A5E03382072-01
5Connecting5.1RS 485 Repeater in ungrounded and grounded operationGrounded or ungroundedThe RS 485 repeater is Grounded, if all other nodes on the bus segment are also operated on ground potential Ungrounded, if all other nodes in the bus segment are operated on ungrounded potentialNoteBus segment 1 is referenced to ground if you connect a PG to the PG/OP socket of theRS 485 repeater. The bus segment is grounded because the MPI in the PG is grounded,and the PG/OP socket of the RS 485 repeater is connected internally with bus segment1.Grounded operation of the RS 485 RepeaterFor grounded operation of the RS 485 repeater, you must bridge terminals "M" and "PE" onthe top of the RS 485 repeater.Ungrounded operation of the RS 485 repeaterFor ungrounded operation of the RS 485 repeater, do not interconnect "M" and "PE" on thetop of the RS 485 repeater. In addition, the supply voltage to the RS 485 repeater must beungrounded.RS 485 RepeaterManual, 02/2011, A5E03382072-0117
Connecting5.1 RS 485 Repeater in ungrounded and grounded operationWiring diagramIn a repeater configuration with ungrounded reference potential (ungrounded operation), anyinterference currents and static charges are discharged to the protective conductor bymeans of an RC network integrated in the repeater (refer to the figure below).3(/ 03( 0 s Q) 0വ0 % % ①Ground busbarRS 485 Repeater18Manual, 02/2011, A5E03382072-01
Connecting5.1 RS 485 Repeater in ungrounded and grounded operationElectrical isolation between bus segmentsBus segments 1 and 2 are electrically isolated. The PG/OP interface is connected internallyto the port for bus segment 1. The figure below shows the front panel of the RS 485repeater./ 0s3( 0 % % 216 '3 3*232))02'('3 216 '& 9 ; 56 5(3( 7(5①②③④ (6 % % ; PG/OP interfaceTerminals for bus segment 1Terminals for bus segment 2Electrical isolationRS 485 RepeaterManual, 02/2011, A5E03382072-0119
Connecting5.2 Connecting the power supplyAmplification of bus signalsThe amplification of the bus signals takes place between the port for bus segment 1 or thePG/OP interface and the port for bus segment 2.5.2Connecting the power supplyCable typeTo connect the 24 V DC power supply, use flexible cables with a cross section of 0.25 mm2to 2.5 mm2 (AWG 26 to 14).Connecting the power supplyTo connect the power supply of the RS-485 repeater: Strip the insulation from the cable for the 24 V DC power supply. Connect the cable to terminals "L ", "M" and "PE".RS 485 Repeater20Manual, 02/2011, A5E03382072-01
Connecting5.3 Connecting the bus cable5.3Connecting the bus cableConnecting the PROFIBUS cableConnect the PROFIBUS cable to the RS 485 repeater, as follows:1. Cut the PROFIBUS cable to the required length.2. Strip the PROFIBUS cable as shown in the figure.The braid shield must be folded back on to the cable. Only then can the shield clamp serveas strain relief and as the shield contact.IRU H[DPSOH 6,0 7,& 1(7 352),%86 FDEOH ;9 IRU H[DPSOH 6,0 7,& 1(7 352),%86 FDEOH ;9 6,(0(166,(0(167XUQ XS EUDLGHG VKLHOG RYHU WKH FDEOH VKHDWKFigure 5-1Stripping length for connecting to the RS 485 repeater1. Connect the PROFIBUS cable to the RS 485 repeater:Connect the same wires (green/red for the PROFIBUS cable) to the same terminal A or B(in other words, always connect terminal A with a green wire and terminal B with a redwire or vice versa).2. Tighten the shield clamps so that the shield makes good contact with the clamp.You can also find the stripping length printed on the RS 485 repeater: 3 (6 0DGH LQ *SIMATIC NET PROFIBUS cablesYou can find an overview of the PROFIBUS cables and their mechanical and electricalproperties in the PROFIBUS system manual on the view/en/35222591).RS 485 RepeaterManual, 02/2011, A5E03382072-0121
Connecting5.4 Configuration options with the RS 485 repeater5.4Configuration options with the RS 485 repeaterOverviewThe following section explains the configurations in which you can use the RS 485 repeater: Bus segment 1 and bus segment 2 terminated on the RS 485 repeater. Bus segment 1 terminated on the RS 485 repeater and bus segment 2 looped through onthe RS 485 repeater. Bus segment 1 and bus segment 2 looped through on the RS 485 repeater.Terminating resistor on/offthe following figure shows the setting for the terminating resistor:Terminating resistoractivatedFigure 5-2onTerminating resistorNOT activatedonSetting of the terminating resistorBus segments 1 and 2 terminatedThe following figure shows how to connect the RS 485 repeater to the ends between two bussegments:Bus segment 1Bus segment 1Terminating resistorBus segment 1enablingRBus segment 2Terminating resistorBus segment 2enablingBus segment 2Figure 5-3Connecting two bus segments to the RS 485 repeaterRS 485 Repeater22Manual, 02/2011, A5E03382072-01
Connecting5.4 Configuration options with the RS 485 repeaterBus segment 1 terminated, bus segment 2 looped throughThe following figures show how to couple two bus segments using an RS 485 repeater. Onebus segment is looped through.Bus segment 1Bus segment 1Terminating resistorBus segment 1enablingRBus segment 2Bus segment 2Figure 5-4Terminating resistorBus segment 2Do not enable!Connecting two bus segments to the RS 485 repeaterRS 485 RepeaterManual, 02/2011, A5E03382072-0123
Connecting5.4 Configuration options with the RS 485 repeaterBus segments 1 and 2 looped throughThe following figures show how to couple two bus segments using an RS 485 repeater. Eachbus cable is looped through on the RS 485 repeater.Bus segment 1Bus segment 1Terminating resistorBus segment 1Do not enable!RBus segment 2Terminating resistorBus segment 2Do not enable!Bus segment 2Figure 5-5Connecting two bus segments to the RS 485 repeaterNoteWhen you turn off the power supply of a complete bus segment, the terminating resistors ofthe connected nodes are also without power supply. This can lead to disruptions orundefined signal states in this bus segment that are not recognized by the RS 485 repeaterand can then lead to problems in the other bus segment.Whenever possible, we recommend the following procedure: Alternative 1:Disconnect the two bus segments before turning off the power supply using switch 6(refer to chapter Design of the RS 485 Repeater) on the repeater (set to "OFF"). Alternative 2:Connect the RS 485 repeater to the power supply of the bus segment to be turned off sothat the repeater is also turned off. In this case, make sure that the RS 485 repeater isnot at the end of the previous bus segment, since the RS 485 repeater then acts as theterminator which has no effect if there is no power supply. If this solution is required, usea PROFIBUS terminator with a permanent power supply downstream from the RS 485repeater. Alternative 3:If you want the RS 485 repeater to retain its power supply, use PROFIBUS terminators toterminate the bus segment you want to turn off since these also require a permanentpower supply. You require 1 terminator if the bus segment to be turned off ends at theRS 485 repeater, otherwise you require 2 terminators.See alsoDesign of the RS 485 repeater (Page 11)RS 485 Repeater24Manual, 02/2011, A5E03382072-01
Technical data6.1General technical data6.1.1Standards and approvals6IntroductionContents of general technical data: The standards and test values that the S7-300 automation system and its associatedcomponents comply with and satisfy. The test criteria that were used for the test.NoteInformation on the nameplateYou will find the current markings and approvals on the type plate of the respectivecomponents.Safety guidelinesWARNINGPersonal injury and damage to property may occur.In potentially explosive environments, there is a risk of injury or damage if you disconnectany connectors while the S7-300 is in operation.Always isolate the S7-300 operated in such areas before you disconnect and connectors.WARNINGExplosion hazardComponents may no longer qualify for Class I, Div. 2 if they are replaced.WARNINGThis S7-300 modules are only suitable for use in Class I, Div. 2, Group A, B, C, D, or innon-hazardous areas.RS 485 RepeaterManual, 02/2011, A5E03382072-0125
Technical data6.1 General technical dataTest symbols and their significanceThe test symbols and their meaning are described in the following section.CE LabelThe S7-300 automation system satisfies the requirements and protection goals of thefollowing EC directives, and conforms with the harmonized European standards (EN) forprogrammable logic controllers announced in the Official Journals of the EuropeanCommunity: 2006/95/EC "Electrical Equipment Designed for Use within Certain Voltage Limits" (LowVoltage Directive) 2004/108/EC "Electromagnetic Compatibility" (EMC Directive) 94/9/EC "Equipment and protective systems intended for use in potentially explosiveatmospheres" (Explosion Protection Directive)The EC declaration of conformity is held on file available to competent authorities at:Siemens AGAutomation & Drives GroupIndustry Sector I IA AS R&D DH AP.O. Box 196392209 Amberg, GermanyYou can also download this under the keyword "Declaration of conformity" on the Internet.UL certificationUnderwriters Laboratories Inc. complying with UL 508 (Industrial Control Equipment)CSA approvalCanadian Standards Association to C22.2 No. 142 (Process Control Equipment)orRS 485 Repeater26Manual, 02/2011, A5E03382072-01
Technical data6.1 General technical datacULus approvalUnderwriters Laboratories Inc. complying with UL 508 (Industrial Control Equipment) CSA C22.2 No. 142 (Process Control Equipment)orcULus HAZ. LOC. - approval /2& Underwriters Laboratories Inc., complying with UL 508 (Industrial Control Equipment) UL 1604 (Hazardous Location) CSA C22.2 No. 142 (Process Control Equipment) CSA C22.2 No. 213 (Hazardous Location)APPROVED for use inClass I, Division 2, Group A, B, C, D Tx;Class I, Zone 2, Group IIC TxFM approvalFactory Mutual Research (FM) in accordance withApproval Standard Class Number 3611, 3600, 3810APPROVED for use inClass I, Division 2, Group A, B, C, D Tx;Class I, Zone 2, Group IIC TxRS 485 RepeaterManual, 02/2011, A5E03382072-0127
Technical data6.1 General technical dataATEX approvalIn accordance with EN 60079-15 (Electrical Apparatus for Potentially ExplosiveAtmospheres; Type of Protection "n") and EN 60079-0 (Electrical apparatus for potentiallyexplosive gas atmospheres - Part 0: General Requirements),, * ([ Q ,, 7 7 Marking for Australia and New ZealandThe S7-300 automation system satisfies requirements of standards toAS/NZS CISPR 16.IEC 61131The S7-300 automation system satisfies requirements and criteria toIEC 61131-2 (Programmable Controllers, Part 2: Equipment requirements and tests).Marine approvalClassification societies: ABS (American Bureau of Shipping) BV (Bureau Veritas) DNV (Det Norske Veritas) GL (Germanischer Lloyd) LRS (Lloyds Register of Shipping) Class NK (Nippon Kaiji Kyokai)Use in industrial environmentsSIMATIC products are designed for industrial applications.Table 6- 1Use in industrial environmentsField ofapplicationNoise emission requirementsNoise immunity requirementsIndustryEN 61000-6-4: 2007EN 61000-6-2: 2005RS 485 Repeater28Manual, 02/2011, A5E03382072-01
Technical data6.1 General technical dataUse in residential areasNoteThe S7-300 is designed for use in industrial areas; using it in residential areas could disturbradio and TV reception.To operate an S7-300 in a residential area, it's RF emission must comply with Limit ValueClass B to EN 55011.Suitable measures for achieving the required Class B radio interference level include, forexample: S7-300 installation in grounded switch cabinets / cubicles Use of noise filters in the supply linesRS 485 RepeaterManual, 02/2011, A5E03382072-0129
Technical data6.1 General technical data6.1.2Electromagnetic CompatibilityDefinitionElectromagnetic compatibility (EMC) is the ability of an electrical installation to functionsatisfactorily in its electromagnetic environment without interfering with that environment.The S7-300 modules also satisfy requirements of EMC legislation for the European domesticmarket. Compliance of the S7-300 system with specifications and directives on electricdesign is prerequisite.Pulseshaped disturbanceThe table below shows the EMC compatibility of S7 modules in areas subject to pulseshaped disturbance.Pulse-shaped disturbanceElectrostatic dischargeaccording to IEC 61000-4-2Burst pulses (high-speedtransient disturbance)to IEC 61000-4-4.Test voltagecorresponds with degreeof severityAir discharge: 8 kV3Contact discharge 4 kV22 kV (power supply lines)2 kV (signal lines 3 m)1 kV (signal lines 3 m)33High-energy single pulse (surge) to IEC 61000-4-5External protective circuit required(refer to operating instructions SIMATIC S7-300, CPU 31xC and CPU 31x:Installing 13008499)in Chapter "Lightning and overvoltage protection") asymmetric coupling2 kV (power supply lines)DC with protective elements32 kV (signal/ data line only 3 m),with protective elements as required symmetric coupling1 kV (power supply lines) DC withprotective elements1 kV (signal/ data line only 3 m),with protective elements as requiredAdditional measuresWhen connecting an S7-300 system to the public network, always ensure compliance withLimit Value Class B to EN 55022.RS 485 Repeater30Manual, 02/2011, A5E03382072-01
Technical data6.1 General technical dataSinusoidal disturbanceThe table below shows the EMC compatibility of S7-300 modules in areas subject tosinusoidal disturbance. HF radiationHF radiation according to IEC 61000-4-3Corresponds withdegree of severityElectromagnetic HF field, amplitude-modulated80 MHz to 1,000 MHz; 1.4 GHz to 2 GHz2.0 GHz to 2.7 GHz10 V/m1 V/m3, 2, 180% AM (1 kHz) HF couplingHF coupling according to IEC 61000-4-6Corresponds withdegree of severity30.15 MHz to 80 MHz10 Vrms unmodulated80% AM (1 kHz)150 Ω source impedanceEmission of radio interferenceElectromagnetic interference according to EN 55016: Limit Value Class A (measured at adistance of 10 m).FrequencyNoise emission30 MHz to 230 MHz 40 dB (µV/m)Q230 MHz to 1000 MHz 47 dB (µV/m)QNoise emission via AC mains to EN 55016: Limit value class A, Group 1.FrequencyNoise emissionFrom 0.15 to 0.5 MHz 79 dB (µV/m)Q 66 dB (µV/m)M0.5 MHz to 5 MHz 73 dB (µV/m)Q 60 dB (µV/m)M5 MHz to 30 MHz 73 dB (µV/m)Q 60 dB (µV/m)MRS 485 RepeaterManual, 02/2011, A5E03382072-0131
Technical data6.1 General technical data6.1.3Shipping and storage conditions for modules and backup batteriesIntroductionThe shipping and storage conditions of S7-300 modules surpass requirements to IEC 611312. The data below apply to modules shipped or put on shelf in th
The RS 485 repeater amplifies data signals (amplitude, edge slope and signal width) on bus lines and couples segments. Application of the RS 485 Repeater The RS 485 repeater connects two PROFIBUS or MPI segments using RS 485 technology with maximum 32 nodes. It enables transfer rates from 9.6 kbps to 12 Mbps. You need an RS 485 repeater if:
36 bushing 3 136-1614 485 485 485 485 37 bushing 1 136-1624 485 485 485 485 38 nut 4 544-0115 080 190 080 39 cap screw 4 168-0564 080 080 080 . 61 shaft (one piece) refer to factory 61a head shaft (2 or 3 piece) refer to factory 61b line shaft (3 piece) refer to factory 61c pump shaft
Yaesu Vertex VXR-5000 25 W UHF repeater Pacific Research controller plugged-in X-50 UHF Antenna TX 444.5 RX 449.5. SCARES aux repeater. SCARES aux repeater. SCARES 6 m repeater GE mobile transceiver configured as a repeater, 53.68- PL 114.8
Build a repeater from TYT- TH9000 Mobile Transceivers Part 1 – Modifying the TYT-TH9000(D) It all started when the Twin Cities Repeater Club’s aging 220 repeater on 224.540 MHz failed due to what appeared to be audio problems. This repeater had served the club and the ham radio community for many years and was built from Spectrum Communications
A vocabulary base of 335 words is available to ID your repeater and make voice announcements. CW ID The controller will switch to CW when a repeater user talks over the voice ID. When the voice ID, message #1 is erased, the controller will ID in CW only. Courtesy Tone Separate courtesy tones denote repeater and link receiver activity. Link Control
SDR pipe 20 701 485 111 0.053 31 70 9-11 25 701 485 112 0.050 36 70 9-11 32 701 485 113 0.071 44 72 9-11 40 701 485 114 0.095 54 80 9-11 50 701 485 115 0.131 66 88 9-11 63 701 485 116 0.194 81 96 9-17.6 Coupler PE 100 SDR 11 (ISO S5) 10 bar Gas / 16 bar Water 4 mm pin connectors Limited path fusion indicators * Removable .
IE-CS(T)-2TX-1RS232/485: DB9 male for RS-232, terminal block for RS-422/485 IE-CS(T)-2TX-2RS232/485: DB9 male for RS-232/422/485 Serial Line Protection: 15 KV ESD protection for all signals 1 KV surge protection (Level 2) RS-485 Data Direction Control: ADDC (automatic data direction control) Serial Communication Parameters Data Bits .
the repeater antenna, pumping out as much power as the repeater does! Anyone answering your call is picked up by the repeater and re-transmitted to you; your hand held receives as though it were connected directly to the repeater antenna and its inefficiencies melt away. Of course repeaters per-form the same magic for mobiles, making the
Assessment commentary and marks Commentary on BEC Higher: Cyrielle and Christopher UCLES 2012. This material may be photocopied (without alteration) and .
