Data Systems, Inc. Computer Hardware User Manual

PMAC2A PC104 Hardware Reference Manual
Acc-1P Connector Pinouts 55
J3 (JMACH1): Machine Port Connector
(50-Pin Header)
Top View
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 CHA5 Input Encoder A Channel Positive 2
6 CHA6 Input Encoder A Channel Positive 2
7 CHA5/ Input Encoder A Channel Negative 2,3
8 CHA6/ Input Encoder A Channel Negative 2,3
9 CHB5 Input Encoder B Channel Positive 2
10 CHB6 Input Encoder B Channel Positive 2
11 CHB5/ Input Encoder B Channel Negative 2,3
12 CHB6/ Input Encoder B Channel Negative 2,3
13 CHC5 Input Encoder C Channel Positive 2
14 CHC6 Input Encoder C Channel Positive 2
15 CHC5/ Input Encoder C Channel Negative 2,3
16 CHC6/ Input Encoder C Channel Negative 2,3
17 CHA7 Input Encoder A Channel Positive 2
18 CHA8 Input Encoder A Channel Positive 2
19 CHA7/ Input Encoder A Channel Negative 2,3
20 CHA8/ Input Encoder A Channel Negative 2,3
21 CHB7 Input Encoder B Channel Positive 2
22 CHB8 Input Encoder B Channel Positive 2
23 CHB7/ Input Encoder B Channel Negative 2,3
24 CHB8/ Input Encoder B Channel Negative 2,3
25 CHC7 Input Encoder C Channel Positive 2
26 CHC8 Input Encoder C Channel Positive 2
27 CHC7/ Input Encoder C Channel Negative 2,3
28 CHC8/ Input Encoder C Channel Negative 2,3
29 DAC5 Output Analog Out Positive 5 4
30 DAC6 Output Analog Out Positive 6 4
31 DAC5/ Output Analog Out Negative 5 4,5
32 DAC6/ Output Analog Out Negative 6 4,5
33 AENA5/ Output Amplifier-Enable 5
34 AENA6/ Output Amplifier -Enable 6
35 FAULT5/ Input Amplifier -Fault 5 6
36 FAULT6/ Input Amplifier -Fault 6 6
37 DAC7 Output Analog Out Positive 7 4
38 DAC8 Output Analog Out Positive 8 4
39 DAC7/ Output Analog Out Negative 7 4,5