Rs485 Connector; Rs232 Connector; Connections Of Terminal Block Connector Rs485; Connections Of Terminal Block Connector Rs232 - Advantech SmartFlex SR307 User Manual

Connection of RS485 connector:
Pin Signal
1 GND
2 TxRx-
3 TxRx+
Table 28: Connections of Terminal Block Connector RS485
Signal ground is isolated from the router's ground.
Connection of RS232 connector:
Pin Signal
1 AUX
2 GND
3 RXD
4 TXD
Table 29: Connections of Terminal Block Connector RS232
Common with router's signal ground.
Figure 52: Ethernet connector
Description
Signal ground
RS485 B(-)
RS485 A(+)
Figure 53: RS485 connector
Description
+5 V/500 mA
Signal ground
Receive Data
Transmit Data
Figure 54: RS232 connector
34
SmartFlex SR307
Direction
—
Input/Output
Input/Output
Direction
—
—
Input
Output