connector wiring scheme Memory Expansion Slot
| Name | Pin | Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | GND | Ground |
| 3 | SDA | I2C Bus |
| 4 | SCL | I2C Bus |
| 5 | +5V | Internal Power Supply |
| 6 | +5V | Internal Power Supply |
Notes
- Can be used to make a memory dump of the internal on-board memory of all SIMATIC CPUs 22x with the appropiate software and hardware