Chapter 2 Connecting peripherals 21
RS-232/422/485 connection (COM2)
COM2 is an RS-232/422/485 serial port. The specific port type
is determined by jumper settings JP35 - JP39, 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 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)
5 GND GND
6 DSR
7 RTS
8 CTS
9RI
COM 2
5 4 3 2 1
NC 9 8 7 6
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