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User manual for - TEMPERATURE TRANSDUCER TRS-02a 

CONTENTS

1. BASIC REQUIREMENTS AND USER SAFETY........................................................................................

3

2. GENERAL CHARACTERISTICS................................................................................................................

4

3. TECHNICAL DATA......................................................................................................................................

4

4. DEVICE INSTALLATION............................................................................................................................

5

4.1. UNPACKING.......................................................................................................................................

5

4.2. ASSEMBLY........................................................................................................................................

5

4.3. CONNECTION METHOD...................................................................................................................

6

4.4. MAINTENANCE..................................................................................................................................

9

5. PRINCIPLE OF OPERATION...................................................................................................................

10

6. THE MODBUS PROTOCOL HANDLING.................................................................................................

10

6.1. LIST OF REGISTERS .....................................................................................................................

11

6.2. READING  OF THE MEASUREMENT RESULT.............................................................................

12

6.3. TRANSMISSION ERRORS DESCRIPTION....................................................................................

12

6.4. EXAMPLES OF QUERY/ANSWER FRAMES.................................................................................

12

7. FORCING OF 0XFF ADDRESS................................................................................................................

15

Explanation of symbols used in the manual:

- This symbol denotes especially important guidelines concerning the installation and  
operation of the device. Not complying with the guidelines denoted by this symbol  
may cause an accident, damage or equipment destruction.

IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS  

RESPONSIBLE FOR POSSIBLE DAMAGES.

- This symbol denotes especially important characteristics of the unit.
  Read any information regarding this symbol carefully

2

Summary of Contents for TRS-02a

Page 1: ...RANSDUCER TRS 02a Firmware v 2 04 or higher Input type Pt100 Designed for TRS system Read the user s manual carefully before starting to use the unit or software Producer reserves the right to impleme...

Page 2: ...ISSION ERRORS DESCRIPTION 12 6 4 EXAMPLES OF QUERY ANSWER FRAMES 12 7 FORCING OF 0XFF ADDRESS 15 Explanation of symbols used in the manual This symbol denotes especially important guidelines concernin...

Page 3: ...be switched off and disconnected from the power supply prior to starting installation of troubleshooting in the case of malfunction Neighbouring and mating equipment must meet the requirements of appr...

Page 4: ...100 type with automatic connection recognition 2 3 or 4 wires Measurement range 50 C up to 550 C Measurement error 0 2 Measurement wires resistance max 20 every wire Number of modules in 1 network max...

Page 5: ...safety requirements on page 3 prior to starting the installation All installation works must be conducted with a disconnected power supply 4 1 UNPACKING After removing the unit from the protective pac...

Page 6: ...overs and sealing packing protecting against water intrusion pay special attention to their correct tightening or clamping In the case of any doubt consider using additional preventive measures covers...

Page 7: ...terminals Figure 4 3 Location of elements inside the module case Last module in the network must be terminated with 100 150 Ohm resistor Figure 4 4 Connection of the module to the network 7 max 2 mm...

Page 8: ...connected to the device in typical 4 wire circuit Figure 4 6 a 3 wire circuit Figure 4 6 b or 2 wire circuit Figure 4 6 c Due to precision of measurement 4 wire circuit is recommended If 2 wire circu...

Page 9: ...nit is operating Excessively high temperatures cause faster ageing of the internal components and shorten the fault free time of unit operation In cases where the unit gets dirty do not clean with sol...

Page 10: ...All settings are stored in non volatile EEPROM memory and available under fixed register numbers LED indicator is installed in the module mainboard it indicates following situations normal operation...

Page 11: ...0 1 C U2 code no decimal point included e g value 155 means shifting of 15 5 C 07h 08h see descr Calibration registers do not change WARNING modification of these registers causes recalibration of mo...

Page 12: ...02h illegal register address 03h illegal data value 10h water inside module 20h temperature sensor damaged 40h exceed of lower border of input range 50 C sensor damage possible 80h exceed of upper bo...

Page 13: ...int Decimal point position can be read from reg 03h b The answer if an error occur ADDR FUNC ERROR CRC L H 01 83 40 40 C0 ERROR error code 40h bottom border of the measurement range is exceeded 2 Read...

Page 14: ...a The answer we assume that input signal is not out of range ADDR FUNC BYTE C DATA H1 L1 DATA H2 L2 CRC L H 01 03 04 00 C1 00 00 AB CF DATA H1 L1 reg 01h 193 measurement value 19 3 C DATA H2 L2 reg 0...

Page 15: ...iguration process To force address of device to value 0xFF turn module power supply and wait until it s LED indicator flashes every 10 second Next press internal switch button and hold it at least 4 s...

Page 16: ...SIMEX Sp z o o ul Wielopole 7 80 556 Gda sk Poland tel 48 58 762 07 77 fax 48 58 762 07 70 http www simex pl e mail info simex pl...

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