| Model no | SM 1231 AI 4x16bit Temperature module | |
| Article No | H7 231-5QD32-0XB0 | |
| Description | Analog value input module AI4 x TC | |
| Conventional norm | Dimensions WxHxD（mm） | 45x100x75mm |
| Power dissipatio | 1.5W | |
| Available current（SM bus） | 80mA | |
| Available current（Sensor power 24V） | 40mA |
| Analog input | Input path | 4 |
| Input type | Thermocouple | |
| Type | J，K，T，E，R，S，B，N，C，TXK/XK（L），Voltage range：+/-80 mv | |
| Resolution | ||
| .Temperature | 0.1 ºC/0.1 ºf | |
| .Resistance | 15 + symbol bits | |
| Max Operating Pressure | ±60 V | |
| Isolate | 500 V AC | |
| Noise suppression | 85 dB，10 Hz/50 Hz/60 Hz/400 Hz | |
| Interchannel isolation | 120V AC | |
| Common-mode rejection | 120 V AC ; > 120 dB | |
| Repeatability | ±0.05 % FS | |
| Cold-end error | ±1.5 ºC | |
| Cable resistance | Maximum is 100 Ω | |
| Diagnose：Upflow/underflow | Support | |
| Open circuit | Support |
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