
PMAC2A-PC104 Hardware Manual
Base Board Connector Pinouts
52
J3 (JMACH1): Machine Port
Connector
(50-Pin Header)
Pin# Symbol Function Description Notes
1 +5V Output +5V Power For encoders, 1
2 +5V Output +5V Power For encoders, 1
3 GND Common Digital Common
4 GND Common Digital Common
5 CHA1 Input Encoder A Channel Positive 2
6 CHA2 Input Encoder A Channel Positive 2
7 CHA1/ Input Encoder A Channel Negative 2,3
8 CHA2/ Input Encoder A Channel Negative 2,3
9 CHB1 Input Encoder B Channel Positive 2
10 CHB2 Input Encoder B Channel Positive 2
11 CHB1/ Input Encoder B Channel Negative 2,3
12 CHB2/ Input Encoder B Channel Negative 2,3
13 CHC1 Input Encoder C Channel Positive 2
14 CHC2 Input Encoder C Channel Positive 2
15 CHC1/ Input Encoder C Channel Negative 2,3
16 CHC2/ Input Encoder C Channel Negative 2,3
17 CHA3 Input Encoder A Channel Positive 2
18 CHA4 Input Encoder A Channel Positive 2
19 CHA3/ Input Encoder A Channel Negative 2,3
20 CHA4/ Input Encoder A Channel Negative 2,3
21 CHB3 Input Encoder B Channel Positive 2
22 CHB4 Input Encoder B Channel Positive 2
23 CHB3/ Input Encoder B Channel Negative 2,3
24 CHB4/ Input Encoder B Channel Negative 2,3
25 CHC3 Input Encoder C Channel Positive 2
26 CHC4 Input Encoder C Channel Positive 2
27 CHC3/ Input Encoder C Channel Negative 2,3
28 CHC4/ Input Encoder C Channel Negative 2,3
29 DAC1 Output Analog Output Positive 1 4
30 DAC2 Output Analog Output Positive 2 4
31 DAC1/ Output Analog Output Negative 1 4,5
32 DAC2/ Output Analog Output Negative 2 4,5
33 AENA1/ Output Amplifier-Enable 1
34 AENA2/ Output Amplifier -Enable 2
35 FAULT1/ Input Amplifier -Fault 1 6
36 FAULT2/ Input Amplifier -Fault 2 6
37 DAC3 Output Analog Output Positive 3 4
38 DAC4 Output Analog Output Positive 4 4
39 DAC3/ Output Analog Output Negative 3 4,5
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