RS485/RS422
32
Wieland Electric GmbH | BA000917 | 01/2019 (Rev. B)
Power supply is selected on the expansion port RS422 by means of a jumper.
If galvanic separation is required the converter must have an external power supply.
Circuit example of the equipment with router with data cable length less than 10 m:
Circuit example of the equipment with a router with data cable length more than
10 m:
With a RS422 data cable more than 10 m, it is necessary to use overvoltage protection on
the router side!
8.5
Port status
LED port indicator
Green LED
Indicates receive data
Yellow LED
Indicates transmit data
Status indication is supported from 4
th
revision of boards.
Figure 22: RS422 con-
nector
NOTICE
Figure 23: Equipment
with a router with data
cable length less than
10 m
Figure 24: Equipment
with a router with data
cable length more than
10 m
NOTICE
Table 20: RS485/422
status indication
NOTICE
