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modport:md-thrt4:index [2023/04/29 12:10]
COMFILE Technology [MD-THRT4’s Sampling Frequency]
modport:md-thrt4:index [2023/05/31 04:35] (current)
COMFILE Technology [4-Channel Temperature Input Module: MD-THRT4]
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-====== Temperature Input Module: MD-THRT4 ======+====== ​4-Channel ​Temperature Input Module: MD-THRT4 ======
  
 +The MD-THRT4, used with a PT100Ω temperature sensor, can measure temperatures between –100 and 500 ℃ with a precision of ±0.5%.
  
 +{{ :​modport:​md-thrt4:​md-thrt4.png?​160 }}
  
-{{ :​modport:​md-thrt4:​md-thrt4.png?​200 }} 
  
 +===== Specification =====
 +^  Item                      ^  Description ​                                                   ^
 +| Channels ​                  | 4                                                               |
 +| Operating Temperature ​     | -10 ~ 50 ℃ ((no condensation) ​                                  |
 +| Operating Humidity ​        | 35 ~ 85%RH                                                      |
 +| Sampling Rate              | 200ms per channel ​                                              |
 +| Input                      | RTD Sensor (PT100) ​                                             |
 +| Allowable Line Resistance ​ | 10Ω or less per line from the module to the temperature sensor ​ |
 +| Precision ​                 | ±0.5% ​                                                          |
 +| Conversion Speed           | 240ms per channel ​                                              |
 +| Communication Method ​      | RS-485 ​                                                         |
 +| Packet Transmission ​       | 3ms                                                             |
 +| Isolation Method ​          | No Isolation ​                                                   |
 ===== MD-THRT4’s Sampling Frequency ===== ===== MD-THRT4’s Sampling Frequency =====
  
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 When the system is first powered on, all four channels are scanned once. Reading at this time will return an invalid value. Please allow at least 800ms from the time the system is powered on before reading from the module. When the system is first powered on, all four channels are scanned once. Reading at this time will return an invalid value. Please allow at least 800ms from the time the system is powered on before reading from the module.
  
 +===== Return Value =====
 +The return value is the temperature in °C multiplied by 10. In other words if the module returns the value
 +205, the actual temperature is 20.5 °C.
 +
 +If an error occurs, the following values may be returned.
 +
 +^  Value         ​^ ​ Description ​                                              ^
 +| 20001 ~ 20003  | An error occurred while transmitting the value to the CPU  |
 +| 20004          | Invalid module ID                                          |
 +| 20005          | Sensor is not connected ​                                   |
 +| 55555          | Value exceeds valid maximum (500.0 °C)                     |
 +| 11111          | Value is below valid minimum (-100.0 °C)                   |
 ===== Modbus Starting Address ===== ===== Modbus Starting Address =====
  
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 Rotary switch position 0 corresponds to Modbus slave address 10. If the ID is changed after the module is powered on, it must be power cycled for the new ID to take effect. Rotary switch position 0 corresponds to Modbus slave address 10. If the ID is changed after the module is powered on, it must be power cycled for the new ID to take effect.
 +
 +[[modport:​index|MODPORT]]
modport/md-thrt4/index.1682737810.txt.gz · Last modified: 2023/04/29 12:10 by COMFILE Technology