| Module | Description |
| M-COM-2 | - 2 serial interfaces: sync., async., SDLC, HDLC, 7,3728 MHz crystal, each channel configurable by C-Link.
|
| M-COM-2/P | - 2 serielle Schnittstellen für Lichtwellenleiter (Plastik)
|
| M-COM-2/G | - 2 serial interfaces for fibre-optic cable: (PCS, glas), full duplex, max. 1,2 MBaud, 1000 m.
|
| M-COM-8 | - 8 serial RS-232 interfaces: baud rates up to 500 Kbaud (replaces M-SIO-8/8).
|
| M-IEC-1 | |
| M-DPM-12 | - PROFIBUS-DP master interface: 1 channel, baud rate up to 12 Mbit/s.
|
| M-DPS-12 | - PROFIBUS-DP slave interface: 2 channels, baud rate up to 12 Mbit/s.
|
| M-CAN-1 | - CAN bus module: corresponding to CAN specification 2.0A and 2.0B
|
