User manual

B. Specifications
127
J4 (Parallel I/O)
J4 is a 50-pin (dual 25-pin) vertical male header with 0.1 inch contact spacing. The 24
general purpose parallel I/O signals are included in this connector. The pin assignments
are given in the “J4 Parallel I/O Pinout” table following. The pin assignments are chosen
for direct connection to an I/O module mounting rack, such as those offered by Ziatech
and Opto 22. The mating connector is a T&B Ansley #622-5030 or equivalent.
J4 Parallel I/O Pinout
Pin# Signal Type Description Pin# Signal Type Description
1 MOD23 In/Out Port 7A, bit 7 26 GND ------ Ground
2 GND ------ Ground 27 MOD10 In/Out Port 79, bit 2
3 MOD22 In/Out Port 7A, bit 6 28 GND ------ Ground
4 GND ------ Ground 29 MOD09 In/Out Port 79, bit 1
5 MOD21 In/Out Port 7A, bit 5 30 GND ------ Ground
6 GND ------ Ground 31 MOD08 In/Out Port 79, bit 0
7 MOD20 In/Out Port 7A, bit 4 32 GND ------ Ground
8 GND ------ Ground 33 MOD07 In/Out Port 78, bit 7
9 MOD19 In/Out Port 7A, bit 3 34 GND ------ Ground
10 GND ------ Ground 35 MOD06 In/Out Port 78, bit 6
11 MOD18 In/Out Port 7A, bit 2 36 GND ------ Ground
12 GND ------ Ground 37 MOD05 In/Out Port 78, bit 5
13 MOD17 In/Out Port 7A, bit 1 38 GND ------ Ground
14 GND ------ Ground 39 MOD04 In/Out Port 78, bit 4
15 MOD16 In/Out Port 7A, bit 0 40 GND ------ Ground
16 GND ------ Ground 41 MOD03 In/Out Port 78, bit 3
17 MOD15 In/Out Port 79, bit 7 42 GND ------ Ground
18 GND ------ Ground 43 MOD02 In/Out Port 78, bit 2
19 MOD14 In/Out Port 79, bit 6 44 GND ------ Ground
20 GND ------ Ground 45 MOD01 In/Out Port 78, bit 1
21 MOD13 In/Out Port 79, bit 5 46 GND ------ Ground
22 GND ------ Ground 47 MOD00 In/Out Port 78, bit 0
23 MOD12 In/Out Port 79, bit 4 48 GND ------ Ground
24 GND ------ Ground 49 VCC ------ +5 Volts
25 MOD11 In/Out Port 79, bit 3 50 GND ------ Ground