Siemens SIPLUS S7-300 CPU 312 (6AG1312-5BF04-2AY0), firmware FM 8, supports LAD/FBD/SCL/STL/GRAPH/HiGraph, extended temperature range -40 to 70°C, EN 50155 railway compliance.
| Parameter | Value |
|---|---|
| Digital inputs | 10 |
| Digital outputs | 6 |
| Expandable | No |
| Input data area | 64 |
| Output data area | 64 |
| Parameter | Value |
|---|---|
| Execution time, bit operations (typ.) | 0.1 µs |
| Execution time, word operations (typ.) | 0.24 µs |
| Execution time, floating-point arithmetic (typ.) | 1.1 µs |
| Size, max. | 256 byte |
| Parameter | Value |
|---|---|
| Programming language: FBD | Yes |
| Programming language: LAD | Yes |
| Programming language: SCL | Yes |
| Parameter | Value |
|---|---|
| Rated value (DC) | 24 V |
| Current consumption (rated) | 570 mA |
| Permissible range, lower limit (DC) | 19.2 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Power loss (typ.) | 8 W |
| Short-circuit protection | Yes; Clocked electronically |
| Parameter | Value |
|---|---|
| Installation altitude, max. | 5 000 m |
| Temperature, min. | -40 °C |
| Temperature, max. | 70 °C |
| Ambient temperature vs. altitude/pressure derating | Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m) |
| Parameter | Value |
|---|---|
| Width | 80 mm |
| Height | 125 mm |
| Depth | 130 mm |
| Weight (approx.) | 410 g |
| Parameter | Value |
|---|---|
| Interface type | Integrated RS 485 interface |
The CPU occupies the standard S7-300 single-width slot: 80 mm wide, 125 mm high, 130 mm deep. It mounts directly on the DIN rail and interfaces with the backplane bus. No expandability is provided beyond the CPU's built-in I/O channels (64 inputs, 64 outputs). Program upload and monitoring use MPI (RS 485) or PROFIBUS via CP. The module supports forcing of I/O and variables—useful during commissioning when verifying logic against real field wiring.
This unit runs firmware version FM 8.
It supports LAD, FBD, SCL, STL, GRAPH, and HiGraph, as well as STEP 7 V5.5+ or V5.3+ with HSP 203.
It operates from -40 to 70 °C and is EN 50155 compliant (sections 4, 5, 12; T1, Category 1, Class A/B).
Yes, CE marking is listed.
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