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sensor:pta8c04_pt100_modbus_modul [2025/12/10 15:55] – vamsansensor:pta8c04_pt100_modbus_modul [2025/12/10 17:08] (current) – [PTA8C04 Probe wiring mode] vamsan
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 ====== lamaPLC: PTA8C04 4-channel PT100 Modbus Modul ====== ====== lamaPLC: PTA8C04 4-channel PT100 Modbus Modul ======
 +PTA8C04 is a specific model of 4-Channel PT100 RTD Temperature Sensor Module that uses RS485 communication for industrial monitoring, enabling it to read temperatures from multiple PT100 resistance temperature detectors (RTDs) and transmit data via the Modbus RTU protocol for PLCs and other controllers, often mounted on DIN rails. 
  
-===== PTA8C04 Modbus settings =====+|{{:sensor:pta8c04_1.png?250|PTA8C04 4-channel PT100 Modbus Modul}}|{{:sensor:pta8c04_2.png?250|PTA8C04 4-channel PT100 Modbus Modul}}|{{:sensor:pta8c04_3.png?250|PTA8C04 4-channel PT100 Modbus Modul}}| 
 +==== PTA8C04 Description ==== 
 +  * Operating Temperature: -40 to 85°C 
 +  * Working Voltage: DC 12V/24V 
 +  * Working Current: 14-18 mA 
 +  * Compatible Sensor: PT100 3-wire or 2-wire 
 +  * PT100 Sensor Range: Version A -40℃ to +220℃, Version B -40℃ to +500℃ 
 +  * Temperature Measurement Accuracy: 1% 
 +  * DIN Rail: PCB board width UM72 (72mm) for DIN35 / C45 rail 
 + 
 +==== PTA8C04 Probe wiring mode ==== 
 +|< 100% 50% 50% >| 
 +|{{:sensor:pta8c04_4.png?250|PTA8C04 4-channel PT100 Modbus Modul}}|{{:sensor:pta8c04_5.png?250|PTA8C04 4-channel PT100 Modbus Modul}}| 
 +|3-wire probe wiring mode: connect the red wire to P+, and the other two wires of the same color to P- and GND (the ports are not distinguished)|2-wire probe wiring mode: connect the red wire to P+, the blue wire to P-, and G| 
 + 
 +{{page>sensor:pt100}} 
 + 
 +==== PTA8C04 Modbus settings ====
 Default settings: SlaveID: 1, 9600 baud, parity: N,8,1 Default settings: SlaveID: 1, 9600 baud, parity: N,8,1
  
 ^holding register addresses^Number of registers^Description^Unit^Note| ^holding register addresses^Number of registers^Description^Unit^Note|
 |0 .. 3|4|CH0 .. CH03 Temperature values|0.1 °C|read-only, 182 -> 18.2 °C| |0 .. 3|4|CH0 .. CH03 Temperature values|0.1 °C|read-only, 182 -> 18.2 °C|
-|32 .. 35|4|CH0 .. CH03 Resistance values|0.1 Ohm|read-only|+|32 .. 35|4|CH0 .. CH03 Resistance values|0.1 Ω|read-only, 1081 -> 108.1 Ω|
 |64 .. 67|4|CH0 .. CH03 Temperature correction values|0.1 °C|r/w; read 0xFFFF| |64 .. 67|4|CH0 .. CH03 Temperature correction values|0.1 °C|r/w; read 0xFFFF|
-|96 .. 99|4|CH0 .. CH03 Resistance correction values|0.1 Ohm|r/w; read 0xFFFF|+|96 .. 99|4|CH0 .. CH03 Resistance correction values|0.1 Ω|r/w; read 0xFFFF|
 |250|1|Automatic upload of temperature|Second|0: by query (default), 1..255 sec raster| |250|1|Automatic upload of temperature|Second|0: by query (default), 1..255 sec raster|
 |251|1|Factory data reset|-|Feedback by reset: FF 06 00 FB 00 00 ED E5| |251|1|Factory data reset|-|Feedback by reset: FF 06 00 FB 00 00 ED E5|
Line 15: Line 33:
 |254|1|Baudrate||0..8; 0: 1200, 1: 2400, 2: 4800, 3: 9600 (default), 4: 19200, 5: 38400, 6: 57600, 7: 115200, 8: Factory reset|  |254|1|Baudrate||0..8; 0: 1200, 1: 2400, 2: 4800, 3: 9600 (default), 4: 19200, 5: 38400, 6: 57600, 7: 115200, 8: Factory reset| 
 |255|1|Parity||0: none (default), 1: even, 2: odd| |255|1|Parity||0: none (default), 1: even, 2: odd|
 +
 +===== Modbus topics on lamaPLC =====
 +{{topic>Modbus}}
 +
 +\\
 +\\
 +{{tag>PTA8C04 sensor Modbus RTU RS-485 communication Platine UM72}}
 +\\
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