EDAC Installation Guide
512-1090-001, Revision K0
Page 41 of 56
Table 16. RJ-21 (25-Pair) Connector Pinout
PAIR PAIR COLOR
PINS
SIGNAL
1
wht-blu
1,26
Port 1 Digital Input Pair
2
wht-org
2,27
Port 2 Digital Input Pair
3
wht-grn
3,28
Port 3 Digital Input Pair
4
wht-brn
4,29
Port 4 Digital Input Pair
5
wht-slt
5,30
Port 5 Digital Input Pair
6
red-blu
6,31
Port 6 Digital Input Pair
7
red-org
7,32
Port 7 Digital Input Pair
8
red-grn
8,33
Port 8 Digital Input Pair
9
red-brn
9,34
Port 9 Digital Input Pair or Port 1 Relay Output Pair
10
red-slt
10,35 Port 10 Digital Input Pair or Port 2 Relay Output Pair
11
blk-blu
11,36 Port 11 Digital Input Pair or Port 3 Relay Output Pair
12
blk-org
12,37 Port 12 Digital Input Pair or Port 4 Relay Output Pair
13
blk-grn
13,38 Port 1 Analog Output Pair
14
blk-brn
14,39 Port 2 Analog Output Pair
15
blk-slt
15,40 Port 3 Analog Output Pair
16
yel-blu
16,41 Port 4 Analog Output Pair
17
yel-org
17,42 Port 5 Analog Output Pair
18
yel-grn
18,43 Port 6 Analog Output Pair
19
yel-brn
19,44 Port 7 Analog Output Pair
20
yel-slt
20,45 Port 8 Analog Output Pair
21
vio-blu
21,46 Port 9 Analog Output Pair or Port 5 Relay Output Pair
22
vio-org
22,47 Port 10 Analog Output Pair or Port 6 Relay Output Pair
23
vio-grn
23,48 Port 11 Analog Output Pair or Port 7 Relay Output Pair
24
vio-brn
24,49 Port 12 Analog Output Pair or Port 8 Relay Output Pair
25
vio-slt
25,50 Not Used
NOTE
Digital input pairs are not polarity sensitive. Pins 1 and 26 are just to the right of the
power connector.
