SB CM01+ is an isolated RS485/232 interface board developed for Siemens S7-200 SMART PLC. It features magnetic isolation, lightning surge protection, and PTC overcurrent protection, improving communication reliability and stability, and extending communication distance.
This document is the user manual for the Siemens S7-200 SMART SB CM01+ isolated RS485/232 interface board. The board is designed for use with Siemens S7-200 SMART PLCs to provide isolated communication signals, featuring surge protection and overcurrent protection circuits to improve reliability and stability, especially when communicating with variable frequency drives. It is fully compatible with the non-isolated SB CM01 interface board and can be used as a direct replacement. This manual is written in Chinese.
| Isolation Voltage | 1000VDC |
|---|---|
| RS232 Max Communication Distance | 30 meters |
| RS485 Max Communication Distance | 1000 meters |
| Operating Temperature | -40～+85℃ |
| Dimensions | 35×52.2×16 mm |
Yes, the isolated SB CM01+ interface board is fully compatible with Siemens' non-isolated SB CM01 and can be directly replaced.
Yes, it has built-in terminal and bias resistors that can be switched on or off, simplifying wiring compared to the non-isolated version.
Disconnect the PLC power, remove the CPU's built-in SB CM01 shell, embed the SB CM01+ board into the shell, and insert it into the CPU until it clicks.