Rs485/422 Connector; Connection Of Rs485 Connector; Connection Of Rs422 Connector - Advantech SmartFlex SR310 User Manual

Connection of RS485 connector:

Connection of RS422 connector:

The selection of either RS485 or RS422 can be performed by using jumpers on the
board. The points where jumpers have to be mounted are shown on the port (see the fig-
ure below). Three jumpers are required for the RS485 interface or one jumper for the RS422
interface. The default configuration is RS485 with termination off.
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Pin Signal Description
1 TxRx+ RS485 B (+)
2 TxRx- RS485 A (-)
3 TxRx+ RS485 B (+)
4 TxRx- RS485 A (-)
Table 24: Connection of RS485 connector
Pin Signal Description
1 RxD+ RS422 (+)
2 RxD- RS422 (-)
3 TxD+ RS422 (+)
4 TxD- RS422 (-)
Table 25: Connection of RS422 connector
Figure 45: RS485/422 connector
SmartFlex SR310
Direction
Input/Output
Input/Output
Input/Output
Input/Output
Direction
Output
Output
Input
Input
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