User`s manual

23 Chapter 2
RS-232/422/485 connection (COM2)
COM2 is an RS-232/422/485 serial port. The specific port type is deter-
mined by jumper settings JP35 - JP39, as detailed in Chapter 1. The fol-
lowing table shows the pin assignments for COM2.
Table 2.4: RS-232/485 connector pin assignments
Pin RS-232 RS-422/485
1 DCD TX - or send data - (DTE)
2 RX TX + or send data + (DTE)
3 TX RX + or receive data + (DTE)
4 DTR RX - or receive data - (DTE)
5GNDGND
6DSR
7RTS
8CTS
Power connectors J1
If you prefer not to acquire power through PCA-6145B/PCA-6145L's
backplane via the gold H-connectors, J1 also provide power input con-
nectors for +5 V and +12 V.
Before making the connection, make sure the voltage is
absolutely correct and matched with the right connector.
Warning!