Specifications

Chapter 2 Connecting Peripherals 19
RS-232/422/485 connection (COM2)
COM2 is an RS-232/422/485 serial port. The specific port type is
determined by jumper settings, as detailed in Chapter 1. The
following table shows the pin assignments for COM2.
RS-232/485 connector pin assignments
Pin RS-232 RS-422/485
1 RLSD TX - or DATA -
2 DSR
3 RX TX + or DATA +
4 RTS
5 TX RX +
6 CTS
7 DTR RX -
8RI
9 GND GND
10 NC NC
Power connectors CN11
If you prefer not to acquire power through PCA-6151’s backplane
via the gold H-connectors, CN11 also provide power input
connectors for +5 V and +12 V.
Warning! Before making the connection, make sure the
voltage is absolutely correct and matched with
the right connector.