| Model no | SM 1231 AI 4x16 bit | |
| Article No | H7 231-5ND32-0XB0 | |
| Description | Analog value input module AI 4 x 16 bit，support 0-20mA/4-20mA/0-10V signal type | |
| Conventional norm | Dimensions WxHxD（mm） | 45x100x75mm |
| Power dissipatio | 2W | |
| Available current（SM bus ） | 80mA | |
| Available current（Sensor power 24V） | 65mA |
| Analog input | Input path | 4 |
| Input type | Voltage or current (differential) | |
| Input range | ±10 V、±5 V、±2.5 V、±1.25 V、0 － 20 mA or 4 mA － 20 mA | |
| Full scale range(Data word） | -27648-27648 | |
| Overshoot/undershoot range(Data word） | Supply voltage:32,511 － 27,649/-27,649 － -32,512 Electric current:0-20 mA:32,511 － 27,649/0 － -4,864；4－20mA:32511 －27,649/-1 － -4,864 | |
| Upflow/underflow(Data word） | Supply voltage: 32,767 － 32,512/-32,513 － -32,768 Electric current: 0 － 20 mA：32,767 － 32,512/-4,865－ -32,768; 4 － 20mA:32,767－ 32,512/-4,865 － -32,768 | |
| Precision | 15+symbol bits | |
| Max Withstand voltage/withstand current | ±60V/±40mA | |
| Level & smooth | None, weak, moderate or strong | |
| Noise suppression | 400、60、50 or 10Hz | |
| Isolate (Field side and Logic side） | None | |
| Precision(25℃/0-55℃） | full-scale ± 0.1%/±0.3% | |
| Operating signal range | The signal plus common-mode voltage must be less than +12V and greater than -12V | |
| Diagnose：Upflow/underflow | Support | |
| Open circuit(Current-only mode） | 4-20 mA range only (if input is below -4,164; 1.0 mA) |
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