
PMAC2A-PC104 Hardware Manual
Acc-1P Connector Pinouts 59
J4 (JMACH2): Machine Port
Connector (34-Pin Header)
Front View
Pin# Symbol Function Description Notes
1
FLG_5_6_V
Input Flags 5-6 Pull-Up
2
FLG_7_8_V
Input Flags 7-8 Pull-Up
3 GND Common Digital Common
4 GND Common Digital Common
5 HOME5 Input Home-Flag 5 10
6 HOME6 Input Home-Flag 6 10
7 PLIM5 Input Negative End Limit 5 8,9
8 PLIM6 Input Negative End Limit 6 8,9
9 MLIM5 Input Positive End Limit 5 8,9
10 MLIM6 Input Positive End Limit 6 8,9
11 USER5 Input User Flag 5
12 USER6 Input User Flag 6
13 PUL_5 Output Pulse Output 5
14 PUL_6 Output Pulse Output 6
15 DIR_5 Output Direction Output 5
16 DIR_6 Output Direction Output 6
17 EQU5 Output Encoder Comp-Equal 5
18 EQU6 Output Encoder Comp-Equal 6
19 HOME7 Input Home Flag 7 10
20 HOME8 Input Home Flag 8 10
21 PLIM7 Input Negative End Limit 7 8,9
22 PLIM8 Input Negative End Limit 8 8,9
23 MLIM7 Input Positive End Limit 7 8,9
24 MLIM8 Input Positive End Limit 8 8,9
25 USER7 Input User Flag 7
26 USER8 Input User Flag 8
27 PUL_7 Output Pulse Output 7
28 PUL_8 Output Pulse Output 8
29 DIR_7 Output Direction Output 7
30 DIR_8 Output Direction Output 8
31 EQU7 Output Encoder Comp-Equal 7
32 EQU8 Output Encoder Comp-Equal 8
33 B_WDO Output Watchdog Out Indicator/Driver
34 No Connect
Note 1: Pins marked PLIMn should be connected to switches at the positive end of travel. Pins marked
MLIMn should be connected to switches at the negative end of travel.
Note 2: Must be conducting to 0V (usually GND) for PMAC to consider itself not into this limit.
Automatic limit function can be disabled with Ix25.
Note 3: Functional polarity for homing or other trigger use of HOMEn controlled by Encoder/Flag
Variable I9n2. HMFLn selected for trigger by Encoder/Flag Variable I9n3. Must be conducting to 0V
(usually GND) to produce a '0' in PMAC software.
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