Table A–12 J5 – COM2 connector pin-outs for RS–422/RS–485
RS–422/RS–485 (J5 connector)
RS–422 RS–485
Pin Signal Pin Signal
*
1 TXD+
1 TXD+
2 TXD–
2 TXD–
3 GND 3 GND
4 RXD+
4 RXD+
5 RXD–
5 RXD–
* See note on page 48 for two-wire
RS–485 connections.
Table A–13 J6 and J14 – Digital I/O connectors
J14 (Digital I/O 1) and J6 (Digital I/O 2)
Pin #
Pin Name
Pin Name
Pin #
1
Port B, bit 4
Vcc (+5V)*
2
3
Port B, bit 5
Port B, bit 2
4
5
Port B, bit 6
Port B, bit 3
6
7
Port B, bit 7
Port B, bit 1
8
9
Port C, bit 7
Port B, bit 0
10
11
Port C, bit 5
Port C, bit 6
12
13
Port C, bit 0
Port C, bit 4
14
15
Port C, bit 2
Port C, bit 1
16
17
Port C, bit 3
Port A, bit 7
18
19
Port A, bit 0
Port A, bit 6
20
21
Port A, bit 1
Port A, bit 5
22
23
Port A, bit 2
Port A, bit 4
24
25
Port A, bit 3
Gnd
26
* +5V safe is fused through a 750 mA automatic, resetting fuse
108
