PMAC2A PC104 Hardware Reference Manual
J4 (JMACH2): Machine Port Baseboard Connector
Front View
Pin# | Symbol | Function | Description | Notes |
1 | FLG_1_2_V | Input | Flags |
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2 | FLG_3_4_V | Input | Flags |
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3 | GND | Common | Digital Common |
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4 | GND | Common | Digital Common |
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5 | HOME1 | Input | 10 | |
6 | HOME2 | Input | 10 | |
7 | PLIM1 | Input | Positive End Limit 1 | 8,9 |
8 | PLIM2 | Input | Positive End Limit 2 | 8,9 |
9 | MLIM1 | Input | Negative End Limit 1 | 8,9 |
10 | MLIM2 | Input | Negative End Limit 2 | 8,9 |
11 | USER1 | Input | User Flag 1 |
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12 | USER2 | Input | User Flag 2 |
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13 | PUL_1 | Output | Pulse Output 1 |
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14 | PUL_2 | Output | Pulse Output 2 |
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15 | DIR_1 | Output | Direction Output 1 |
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16 | DIR_2 | Output | Direction Output 2 |
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17 | EQU1 | Output | Encoder |
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18 | EQU2 | Output | Encoder |
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19 | HOME3 | Input | 10 | |
20 | HOME4 | Input | 10 | |
21 | PLIM3 | Input | Positive End Limit 3 | 8,9 |
22 | PLIM4 | Input | Positive End Limit 4 | 8,9 |
23 | MLIM3 | Input | Negative End Limit 3 | 8,9 |
24 | MLIM4 | Input | Negative End Limit 4 | 8,9 |
25 | USER1 | Input | User Flag 1 |
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26 | USER2 | Input | User Flag 2 |
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27 | PUL_3 | Output | Pulse Output 3 |
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28 | PUL_4 | Output | Pulse Output 4 |
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29 | DIR_3 | Output | Direction Output 3 |
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30 | DIR_4 | Output | Direction Output 4 |
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31 | EQU3 | Output | Encoder |
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32 | EQU4 | Output | Encoder |
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33 | B_WDO | Output | Watchdog Out | Indicator/driver |
34 | No Connect |
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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.
52 | Base Board Connector Pinouts |