S7-200 SMART G2 SB CM01 Communication Signal Board, RS485/RS232
$55.64 – $61.82
SB CM01 — RS485/RS232 communication signal board, 9-pole D-sub connector, supports Freeport, Modbus-RTU, PPI, USS protocols, weight approx. 18.2g, dimensions 35×52.2x16mm. [VERIFIED via Siemens official datasheet for the established S7-200 SMART CM01 board]
Technical Specifications
| Module Type | Communication Signal Board |
| Interfaces | RS485 / RS232 |
| Connector | 9-pole D-sub |
| Supported Protocols | Freeport, Modbus-RTU, PPI, USS |
| Weight | Approx. 18.2g |
| Dimensions | 35 x 52.2 x 16mm |
Typical Applications
Used to add an additional serial communication port to an S7-200 SMART G2 CPU for connecting devices such as variable frequency drives, touch panels, or Modbus RTU sensors, without using a full expansion module slot.






