Panel fit and wiring clues
Module is 40 x 125 x 117 mm, mounts on standard DIN rail, and uses a 20-pin spring-cage front connector. It has reverse polarity protection and diagnostics (group error red LED, readable alarms). Isolation tested to 500 V.

Siemens S7-1200 SM 1231 AI 8 x 0/4-20 mA, 6AG1331-7TF01-7AB0, 40 x 125 x 117 mm, -40..70 °C, 8 inputs, 0.205 kg.
| Parameter | Value |
|---|---|
| Analog inputs | 8 |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Max. | 70 °C |
| Power loss (typ.) | 1.5 W |
| Current consumption from backplane bus (5 V DC), max. | 120 mA |
| Current consumption from load voltage L+ (no load), max. | 20 mA |
| Reverse polarity protection | Yes |
| Isolation test voltage | 500 |
| Isolation: between channels | No |
| Isolation: channels to backplane bus | Yes |
| Max. cable length, shielded | 800 m |
| Parameter | Value |
|---|---|
| Resolution incl. overrange (bit, with sign), max. | 16 bit |
| Diagnostic alarm | Yes |
| Diagnostics function | Yes |
| Group fault indicator (SF, red LED) | Yes |
| Parameter | Value |
|---|---|
| Min. | -40 °C |
| Parameter | Value |
|---|---|
| Height | 125 mm |
| Width | 40 mm |
| Depth | 117 mm |
| Weight (approx.) | 205 g |
| Parameter | Value |
|---|---|
| CE mark | Yes |
Module is 40 x 125 x 117 mm, mounts on standard DIN rail, and uses a 20-pin spring-cage front connector. It has reverse polarity protection and diagnostics (group error red LED, readable alarms). Isolation tested to 500 V.
It is rated from -40 °C to 70 °C ambient, making it suitable for extended environmental conditions.
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