Operating Instructions TR1200
Contents
1. 20 TR1200 12320 0702 03 Seite 2 20 www ziehl de 1 Application and brief description The Pt 100 thermostat TR1200 is especially suitable for temperature monitoring wherever up to 12 different measuring points must be monitored simultaneously Motors and generators Simultaneous monitoring of bearings and coolant Transformers with additional monitoring of the core temperature power machines and plants The Pt 100 thermostat TR1200 measure the temperature of up to 12 Pt 100 thermometers With the RS485 Interface measured temperature values can be issued i e for remote control or further evaluation One error relay monitors sensor failures und signals general malfunctions 2 Overview of functions 3 digit temperature display 12 inputs for temperature sensors 1 12 sensors can be connected Pt 100 thermostats with 2 or 3 wire connection 1 Error relay potential free change over contact RS485 Interface ZIEHL standard protocol and Modbus RTU protocol LED signal the measuring channel Error state relay function and RS485 activity Code lock prevents parameter manipulation TR600 compatible to replace one TR600 with 6 sensors connected Universal power supply AC DC 24 240 V Snap mounting on 35 mm standard rail EN 60715 TR1200 12320 0702 03 Seite 3 20 www ziehl de 3 Display and controls 1 2 42 nc 122. Seite 13 20 www ziehl de iEHi_ 11 Trouble shooting Error code Wrong temperature values Parameter configuration not allowed TR1200 12320 0702 03 Cause Under range 15 Q lt R lt 18 39 Q Over range 390 26 Q lt lt 4000 Sensor or line short circuit LED error illuminates LED of the corresponding sensor flashes Sensor or line interruption LED error illuminates LED of the corresponding sensor flashes Internal device error Malfunction of the device Invalid parameter Sensors with 3 wire technique interchanged Code lock active Seite 14 20 Remedy check sensor and line resistance compensation check sensor and line resistance compensation check sensors wires terminals check sensors wires terminals Switch unit off and back on If the error continues to appear the unit must be returned to the factory for repair Press button SET for 10 s when switching on supply voltage for factory settings Check sensors with 3 wire technique Terminals of sensor 1 6 are not compatible to terminals sensor 7 12 The Code lock can be activated as a protection against manipulation of the settings The user can change the PIN Code You have forgotten the PIN gt Make a code reset press button SET for 2 s when switching on supply voltage display changes 888 Cod Release button SET Code OFF PIN 504 www ziehl de oFF 888
3. Rated impulse voltage Overvoltage category Contamination level Rated insulation voltage Ui On time Galvanic isolation between No galvanic isolation between TR1200 12320 0702 03 4800 9600 19200 Baud N O E no uneven even 1000m with 19200 Baud 6 10ms RS485 protocol EN 61010 1 4000 V 2 300 V 100 auxiliary voltages Sensor ports 3820 V RS485 interface Sensor ports Seite 15 20 www ziehl de 21 2 _ EMC tests Emitted interference Burst SURGE Discharge of static electricity Environmental conditions Ambient temperature range Storage temperature range Altitude Climatic conditions External wiring temperature range Vibration resistance EN 60068 2 6 Housing Dimensions W x H x D Mounting height width Wire connection single wire Stranded wire with insulated ferrules Torque of screw Protection class housing terminals Fitting position Installation Weight Subject to technical changes TR1200 12320 0702 03 EN 61326 1 EN 61000 6 3 EN 61000 4 4 4 Pulse 5 50 ns f 5 kHz t 15 ms T 300 ms IEC 61000 4 5 4 kV Impulse 1 2 50 us 8 20 us IEC 61000 4 2 4 kV contact 8kV air 20 65 20 C 70 C Up to 2000 m 5 85 rel humidity no condensation 5 C 70 C 2 25 Hz 41 6 mm 25 150 Hz 59 Design V8 distribution cabinet mounting 140 x 90 x 58 mm 55 8 each 1
4. 11 14 p Impe LE 9 sper im REND aie iUc L7 eie idee ve ee ne AC DC 24 240 V S gp 3 Pt 100 Temperaturrelais Ede S 4 1200 3 5 EE EEE out of range ini Sat 6 RS 485 297 2 Reset 7 Rx Tx ww 8 2 1 LED relay state yellow OFF The relay is released Illuminated The relay is picked up 2 LED sensors yellow Displays the sensor value belonging to the LED in the digital Illuminated display flashes Er or All illuminated 3 Digital display 3 digits red Display of sensor value Display of error codes e g 9 4 Hindmost decimal point red OFF Display mode Illuminated Menu mode flashes Parameter mode 5 LED error red Sensor error in the corresponding sensor circuit Displays the value of the warmest sensor in the digital display OFF normal operation Illuminated with Er I Ere CT EE or Erg Sensor error malfunction invalid parameter 6 Button Up Down display mode normal operation Press briefly Press for 2s button Set for 2 2s to erase the stored value 7 Button Set Reset display mode normal operation Press briefly Press for 2s Press for 10s Reset back to display mode Displays the software version e g 000 8 LED RS485 Interface yellow Rx flashes briefly Tx flashes briefly Unit is receiving data via the RS485 interface Unit is transmitting data via th
5. 9 8 7 oso eee ee eee ene io Ceteri t feni eee eee Ux 9 8 8 Configuring the teldy 10 8 9 Configuring the RS485 10 8 10 Ure 11 811 5 015 11 8 12 Possible indications 2 t 12 9 Factory settings and software version 13 10 Maintenance and i eT Um 13 11 Trouble SOO 14 12 Technical 15 13 Ho si g design 17 14 RS485 interface Protocols entorno teta tru ana tI Eua nnmnnn 17 14 1 Modbus protocol M EEEE 17 14 2 SASS e TE 18 15 Appendix SIPROTEC configuration
6. gt Il ZIEHL industrie elektronik GmbH Co KG DaimlerstraBe 13 D 74523 Schw bisch Hall Temperature Relays and MINIKAG Mains Monitoring Digital Panelmeters MINIPANG Switching Relays and Controls 49 791 504 0 info ziehl de www ziehl de Operating Instructions TR1200 updated 130215 Ba Fz from Firmware 02 Pt 100 thermostat with 12 sensor ports and Interface RS485 872 era 9T3 3 2 342 3 9 3 tori 2 10 3 2 2 3 272 4 PAK Cx 12320 1200 00 TR1200 12320 0702 03 Page 1 20 www ziehl de Table of contents 1 Application and 3 2 Overview Rossi Aem 3 3 Display a d ung nm 4 A Description 5 Important INGE OS EE ooo omm 5 6 6 T Connection 7 7 Bal eS ucc EI tttm 7 8 2 Description of the parameters 8 8 3 Display mode last decimal point 8 8 4 Menu mode last decimal point ON 2 8 8 5 Configuration mode last decimal point 9 8 6 2 wire technique line resistance
7. p i 12 Technical Data Rated supply voltage Us Tolerance Power consumption Relay output Switching voltage Switching current Switching capacity UL electrical ratings E214025 Nominal operational current le AC15 DC13 Recommended fuses for contact Expected contact life mechanical Expected contact life electrical Temperature measurement Measuring time sensor resistance Measuring time line resistance Measuring range Resolution Sensor connection AC DC 24 240 V 0 50 60 Hz DC 20 4 297 V AC 20 264 V lt 3W lt 10VA 1 Wechsler CO max 415 V max 5A max 1250 VA ohmic load 120 W at DC 24 V 250 V ac 5 A resistive 240 V ac 1 2 hp 120 V hp B 300 pilot duty UL 508 Ue 250 V le 2A 24 0 2 Ue 125 V 0 1 Ue 250 V T 3 15 A gL 1 x 107 operations 1 x 10 operations at AC 250 V 6 A 0 25 3s depending on number of sensors 0 25 30s each cycle of a sensor 199 850 1 C 12 x Pt 100 according EN 60751 temperature Short circuit Interruption range C Ohm Ohm Pt 100 Ohm Sensor min max lt gt 100 199 860 15 400 500 Measuring accuracy 0 5 96 of measuring value 1 Sensor current lt 0 8 mA Temperature drift 0 04 C K RS485 interface Address of unit 0 96 Baud rate Parity Cable length Time end request start answer Test conditions
8. plug in terminals T11 T12 T13 etc To ensure proper operation this plug in terminals have gold plated contacts Do not use these plugs for other terminals Caution The sensor inputs and the RS485 interface are applied to the same electrical potential but are galvanically isolated 2kV for the auxiliary voltage Take this into consideration during configuration RS485 connection Use RS485 Interface only with shielded wires Large cable lengths may shift the potential ground and the transmission can be disturbed Corrective measures can be galvanic separation or an additional ground wire Max allowed cable length is 1000m 6 Installation The device can be mounted e Distribution board or switchgear cabinet on 35 mm rails according to EN 60715 Observe the maximum temperature permissible when installing in switching cabinet Make sure sufficient space to other equipment or heat sources If the cooling becomes more difficult e g through close proximity of apparatus with elevated surface temperature or hindrance of the cooling air the tolerable environmental temperature is diminishing Attention Universal power supply The unit is equipped with a universal power supply that is suitable for DC and AC voltages Before connecting the unit to the current make sure that the allowed scope of voltage of the control voltage Us written on the lateral type plate corresponds to the supply voltage of the unit A circuit br
9. the Up or Down button If no key has been pressed for 15 minutes the device automatically switches back to the display mode Adjustment process e Select the menu item with the Up Down key until Display 5v Simulation e Press the Set key Display S 5 1 Simulation Sensor flash alternately e Use the Up and Down keys to select the sensor function e Press the Set key Display 0 Temperature e Simulate the desired temperature using the Up and Down keys e Press the Set key Display S Simulation By pressing the Set button repeatedly all sensors can be selected in succession The simulated values are retained until the menu item 5 is left by pressing Up or Down 8 11 Code lock Here the set parameters can be protected by activating a code lock The device acknowledges an incorrect entry with Err flashes three times Adjustment process e Select the menu item with the Up Down key until Display ted Code lock e Press the Set key Display Pin 0 Pin Pin code flash alternately Use the Up and Down keys to set the saved pin code factory setting is S04 e Press the Set key e Set the desired code block using the Up and Down keys o eFF off all parameters can be changed on parameters be changed e Press the Set key Display Pin 50H Pin Pin code flash alternately e Set the desired new pin code with the Up and Down keys caution write down the pin code
10. EN and checked and leave the plant according to security in perfect condition To keep this condition observe the security instructions with the headline Attention written in the instructions manual Ignoring of the security instructions may lead to death physical injury or damage of the equipment itself and of other apparatus and equipment If in any case the information in the instructions manual is not sufficient please contact our company or the responsible representative Instead of the industrial norms and regulations written in this instructions manual valid for Europe you must observe out of their geographical scope the valid and relevant regulations of the corresponding country TR1200 12320 0702 03 Seite 5 20 www ziehl de When all relays are programmed operation current mode pick up at alarm loss of the supply voltage or an instrument failure can remain unidentified When the relay is applied as control instrument the operator must ensure that this error is recognized by regular examinations We recommend to program and accordingly evaluate at least one relay in the closed circuit current mode Caution Temperature sensor terminals The pin connections of Sensors 1 6 below are not compatible with Sensors 7 12 above If a 3 wire technique sensor connected below is to be connected above both external connections must be swapped Temperature sensors must be connected to the
11. ation Connect the sensor at terminals xT1 and xT3 xT2 has to be open To compensate the line resistance short circuit the wires nearby the sensor and measure the line resistance We recommend using 2 or bettering 3 wires for each sensor With 2 wire connection and a common line for all signals all sensor measuring currents will be added on the common line Thus the value of the compensation line resistance RK must be calculated as follows n 1 x RL 2 RL line resistance of two wires n number of sensors 8 7 Configuring sensors Adjustment process e Select the menu item with the Up Down key until Display SEn e Press the Set key Display 5 I J L Sensor 1 Connection type flash alternately Use the Up and Down keys to set the connection type or line resistance Sensor not connected Select 3 conductor connection Select 3 L 2 conductor connection 000 Perform a line compensation and adjust the line resistance Press the Set key Display 5 8 3 L Sensor 2 Connection type flash alternately e Configure all 12 sensors in this manner TR1200 12320 0702 03 Seite 9 20 www ziehl de 8 8 Configuring the relay Adjustment process Select the menu item with the Up Down key until Display rEL Relay function Press the Set key Display rEL Relay function Zero signal current flash alternately Use the Up and Down keys to select the relay function Press the Set key exits the configurati
12. e Press the Set key exits code locking Code lock on display _ on flashes three times Code lock off display oFF flashes three times Display Cod Code lock TR1200 12320 0702 03 Seite 11 20 www ziehl de 8 12 Possible indications display Display mode Error messages see 11 Error messages and measures Menu mode Configuration mode Menu item sensor configuration Pin code factory setting 504 TR1200 12320 0702 03 Seite 12 20 www ziehl de 9 Factory settings and software version Press button SET for 10 s when switching on supply voltage for factory settings My Parameter Factory settings configurations 5 Sensor 1 3 t Sensor 2 3 t 5 3 Sensor 3 Jo 5 4 Sensor 4 3 L 5 5 Sensor 5 J L 5 Sensor 6 3 t 5 Sensor 7 nc 5 B Sensor 8 nc 5 8 Sensor 9 nc 50 Sensor 10 nc S11 Sensor 11 nc 512 Sensor 12 rEL Relay function r Prt Protocol 485 Adr Unit address 0 bdr Baud rate 96 PAr Parity bit Eve 5 Sensor 1 850 Sle Sensor 12 850 on oFF oFF Pin PIN code 504 Display of Software Version Press SET for 10 in display mode 10 Maintenance and repair The devices are maintenance free Only the manufacturer may accomplish repairs We recommend an examination within the regular maintenance periods of the plant in which the equipment is installed TR1200 12320 0702 03
13. e RS485 interface TR1200 12320 0702 03 Seite 4 20 www ziehl de Change into the menu mode see Operating instructions Point 8 4 Displays the stored MAX value Up MIN value Down press also Displays the value of next sensor sensor LED illuminates P d i 4 Description of terminals Terminal Function A1 and A2 Supply Voltage Us see Operating Instructions Point 12 11 12 14 Error relay change over contacts 1T1 12T3 Sensor connection XT2 Sense line of three wire technique 485 receiving wire RS485 load resistor jumper to terminal A required RS485 transmitting wire RS485 load resistor jumper to terminal B required Ground wire of RS485 interface potential equalisation between multiple units 5 Important Notes DANGER Hazardous voltage Will cause death or serious injury Turn off and lock out all power supplying this device before working on this device To use the equipment flawless and safe transport and store properly install and start professionally and operate as directed Only let persons work with the equipment who are familiar with installation start and use and who have appropriate qualification corresponding to their function They must observe the contents of the instructions manual the information which are written on the equipment and the relevant security instructions for the setting up and the use of electrical units The equipments are built according to DIN
14. eaker or switch must be situated within easy reach of the unit and fused Installation excess current protection should be S 10 A TR1200 12320 0702 03 Seite 6 20 www ziehl de 7 Connection diagram 8 9 9 9 9 gura coru esu 711 7T2 7 8T1 2 eqs 9T 2 vori iorz ors 1174 117 2 2 2 ies fa io 30 H e Error C Er sensor short circuit sensor interrupt Er internal error Er 8 parameter error EE EEE out of range in ML Mi 12320 1200 00 b Set 2 Reset Us 2 uc 12 11 TUI 21 AC DC 24 240 V Pt 100 Temperaturrelais TR 1200 RS 485 RS 485 8 Commissioning 8 1 Control chart TR1200 e 1 Sensor 12 T T he MENS M 171 ag 172 b 173 TE ami 272 ELT ari 2 ges 472 5T1 5 2 sra er sl la 9 Display mode 9 c a 9 9 gt alternating od baud PA EuE Display PEN z am Biy odd P unit ugs Adr 95 ww gt 192 b 4 081 Up Down together Nw resets values to Zero Code Reset press 2 s Set when 5 Sens
15. hat are not connected as nc Configure Sensors 7 12 in menu item SEn as nc Set device address in menu item bUS gt Ade 100 The TR1200 transmits the data from Sensors 1 6 cyclically every 3s 6 RTD half duplex operation mode 1x TR1200 works like 1x TR600 Connect Sensors 1 6 gt Configure Sensors 1 6 in menu item _ SEn depending on the connection configure sensors that are not connected as nc Configure Sensors 7 12 in menu item _ SEn as nc Set device address in menu item 615 gt Adr to 1 The TR1200 transmits the data from Sensor 1 6 on request with address 1 12 RTD half duplex operation mode 1x TR1200 works like 2x TR600 gt Connect Sensors 1 12 Configure Sensors 1 12 in menu item depending on the connection configure sensors that are not connected as nc gt Set device address in menu bUS gt 101 The TR1200 transmits the data from Sensors 1 6 on request with address 1 and from Sensors 7 12 on request with address 2 TR1200 12320 0702 03 Seite 20 20 www ziehl de
16. nsor 1 6 If one of the sensors 7 12 is configured data of these sensors will be transmitted with configured unit address 1 In the case of unit address 0 94 und 96 no request must be send Type of unit TR600 64 Byte Type of unitTR120 82 Byte Example Request s01r0048 r n Master sends data request End of message CR lt LF gt Block check EXOR of all transmitted bytes data mode 0 Modus 0 Read command r read Address of unit 01 99 ASCII start of message s Sor lt STX gt Block sum s 115 EXOR 0 48 EXOR 1 49 EXOR r 114 EXOR 0 48 048 The values in brackets correspond with the ASCII code of the sign Answer sTR600 01 0 154 055 268 999 980 999 1 0 0 1 0 0 1 02 119 r n lt Data mode gt lt Address of unit gt lt Type of unit gt lt Start of message gt Temp Sensors Alarm 1 7 gt Internal error Block sum gt End of message TR1200 12320 0702 03 Seite 19 20 www ziehl de 15 Appendix SIPROTEC configuration The sensor connections and the configuration of the TR1200 for evaluation on a Siemens SIPROTEC protection device are described below While doing so the Thermo box operation mode is differentiated 6 RTD Simplex operation mode 1x TR1200 works like 1x TR600 Factory setting gt Connect Sensors 1 6 Configure Sensors 1 6 in menu item SEn depending on the connection configure sensors t
17. on mode Display rEL Relay function 8 9 Configuring the RS485 interface Adjustment process Note Select the menu item with the Up Down key until Display 65 Bus Press the Set key Display Prt 485 Protocol 485 flash alternately Set the desired protocol using the Up and Down keys Press the Set key Display Adr 0 Device address Value flash alternately Set the desired device address using the Up and Down keys Press the Set key Display 96 Baud rate Value flash alternately Set the desired baud rate using the Up and Down keys Press the Set key gt Display PAr Parity Value flash alternately Set the desired parity bit using the Up and Down keys Press the Set key exits the configuration mode Display 65 Bus The set device address always applies for the transmission of Sensors 1 6 If at least one of the sensors 7 12 as is configured as 2 or 3 conductor not nc they will be transmitted with the set device address 1 More information about Modbus configuration and programming can be found in Appendix 1 Download from www ziehl com TR1200 12320 0702 03 Seite 10 20 www ziehl de ZiEHi 8 10 Simulation A sensor can be selected and a temperature simulated here All device functions operate as if this value is actually being measured Error messages are only indicated by LED and not in the display The set values are simulated until the menu item 5 is left with
18. or A Switching on supply voltage 24 199 Pin 504 850 Error Code EE under range 3X Err 3X_on oFF EEE over range gt Er short circuit sensor 000 ol 000 Er interruption sensor 999 OFF 999 E B Internal device error ww WwW ww is 9 invalide parameter 12320 0702 03 Seite 7 20 www ziehl de 8 2 Description of the parameters Parameters Display Explanation Adjustment range Sensors Menu item for sensor configuration RE configuration line compensation Sensor 842 Zero signal current operating current Menu item for configuring the RS485 interface Protocol Set ZIEHL Modbus protocol Address Set the device address Baud rate Set the baud rate Parity Set the parity bit 8 3 Display mode last decimal point off In the display mode the TR1200 is in its normal state here the temperature of the selected sensor is displayed In addition the error codes e g Er are also displayed Function key Press briefly Switches the sensor over Set Reset Press for gt 10 s Displays the software version e g 000 Press briefly Changes into the menu mode Function key Up Down Press for 22s Displays MAX and MIN measurements additionally pressing the Set key for 2 2s deletes the saved values 8 4 Menu mode last decimal point on The menu mode is used to select the menu items If no key is pressed fo
19. r 30s one automatically returns to the display mode Press briefly Changes into the configuration mode Function key Set Reset Press for 22 s Returns to the display mode the most recently set values are then taken over Function key Press briefly Select menu item switches to the Up Down display mode TR1200 12320 0702 03 Seite 8 20 www ziehl de 8 5 Configuration mode last decimal point flashes The value of a parameter can be set in the configuration mode The display continually alternates between the parameter name and the currently set value until the Up Down key is pressed which changes the value of the parameter If no key is pressed for 2s the display starts alternating If no key is pressed for 30s simulation mode 15min one automatically returns to the display mode the most recently set value is taken over Press briefly The settings are taken over continue to next parameter After the last parameter change into menu mode Press for 22 s Returns to display mode except simulation mode the most recently set values are taken over during this Function key Set Reset Function key Press short long Changes the parameter value Up Down fast slow Hint Pressing the Up and Down keys simultaneously sets the adjustable value to zero If you keep the Up or Down key pressed while setting a value the speed of the change in the display is accelerated 8 6 2 wire technique line resistance compens
20. te EXOR of all transmitted bytes 3 Byte Carriage Return CR 0x0D 1 Byte Line Feed LF 0x0A 1 Byte 64 Byte Sensor not connected data 980 Sensor short circuit data 999 Sensor interruption data 999 2 01 EEprom error 02 parameter error O32ADC error TR1200 12320 0702 03 Seite 18 20 www ziehl de 3s x TR600 0000000 x x TR600 X X X X 0000000 x Ix Ix Jb X TR600 x x x gt lt x LO LO 010 x WRIA 111 x lt x se x x TR600 X X X X X X X X 0000000 xe xe UL x oe Lo 35 TR600 0000000 3s x TR600 x x x oe e oe 0100 X Ole Xa Xa bal ba bal ba kx x x x x when unit address 94 is configured data of sensor 1 6 will be send in 3s under unit address 94 and 3s later data of sensor 7 12 will be send under unit address 95 independent of sensor configuration Hints The configured unit address is permanent for transmitting data of se
21. ven default odd no Separated by ASCII Master requests data from TR1200 Master sends lt start gt lt address of unit read command data mode BCC CR LF Start of message S ASCII or S ASCII or STX 0x02 1 Byte Address of unit 0 99 ASCII 2 Byte Read command r ASCII or R ASCII 1 Byte Data mode 0 9 ASCII 1 Byte Block check EXOR of all transmitted bytes 3 Byte Carriage Return CR 0x0D 1 Byte Line Feed LF 0x0A 1 Byte 10 Byte TR1200 sends the requested data TR sends start type of unit gt lt address of unit mode data lt BCC gt lt CR gt lt LF gt Start of message s ASCII or S ASCII or STX 0x02 1 Byte same as request Type of unit TR600 ASCII or TR120 ASCII 5 Byte Address of unit 0 99 ASCII 2 Byte p e Data mode 0 9 ASCII 1 Byte EO Cu Value sensor 1 7 199 850 ASCII 4 Byte Value sensor 2 8 199 850 ASCII 4 Byte ou Value sensor 3 9 199 850 ASCII 4 Byte Value sensor 4 10 199 850 ASCII 4 Value sensor 5 11 199 850 ASCII 4 Value sensor 6 12 199 850 ASCII 4 Alarm 1 0 ASCII 1 Byte 2 0 ASCII 1 Byte 5 Alarm 3 0 ASCII 1 Byte Alarm 4 0 ASCII 1 Byte 5 0 ASCII 1 Byte Eo ue Alarm 6 0 ASCII 1 Byte p CU Alarm 7 0 1 ASCII 1 Byte Internal error 0 99 ASCII Uv 2 By
22. x 1 5 each 1 x 1 0 mm 0 5 Nm 3 6 Ib in IP IP 20 any Snap mounting on mounting rail 35 mm according to EN 60715 or with screws M 4 additional bar in scope of delivery app 350g Seite 16 20 www ziehl de p 13 Housing design V8 Dimensions in mm 116 Oberteil cover Unterteil base Riegel bar for snap mounting Plombenlasche latch for sealing Frontplatteneinsatz front panel Kennzeichen f r unten position downward Riegel bei Wandbefestigung mit Schrauben Riegelbohrung 4 2 mm for fixing to wall with screws 4 2 mm 14 RS485 interface Protocols The TR1200 optionally supports the Modbus or the ZIEHL RS485 protocol Device data and measurements can be read out with both protocols in addition the TR1200 can be configured using the Modbus protocol The protocol is selected in the menu item b s see 8 9 Configuring RS485 interface 14 1 Modbus protocol You can find documentation on the Modbus protocol in the Internet at www ziehl com TR1200 Modbus Appendix TR1200 12320 0702 03 Seite 17 20 www ziehl de 14 2 RS485 Protocol Depending on the configured data mode the TR1200 transmits data with ZIEHL TR600 protocol in data mode 0 or with TR1200 protocol in data mode 4 Transmission format ASCII Compatibility TR600 RS485 Modus 0 Baud rate 9600 default 4800 19200 Data bits 8 Stop bit 1 Parity e
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