PMAC2A PC104 Hardware Reference Manual
| J4 (JMACH2): Machine Port |
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| Connector |
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| Front View | ||
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| Pin# | Symbol | Function | Description |
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| 1 | FLG_5_6_V | Input | Flags |
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| 2 | FLG_7_8_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 | HOME5 | Input | 10 | |||
| 6 | HOME6 | Input | 10 | |||
| 7 | PLIM5 | Input | Positive End Limit 5 | 8,9 | ||
| 8 | PLIM6 | Input | Positive End Limit 6 | 8,9 | ||
| 9 | MLIM5 | Input | Negative End Limit 5 | 8,9 | ||
| 10 | MLIM6 | Input | Negative End Limit 6 | 8,9 | ||
| 11 | USER5 | Input | User Flag 5 |
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| 12 | USER6 | Input | User Flag 6 |
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| 13 | PUL_5 | Output | Pulse Output 5 |
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| 14 | PUL_6 | Output | Pulse Output 6 |
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| 15 | DIR_5 | Output | Direction Output 5 |
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| 16 | DIR_6 | Output | Direction Output 6 |
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| 17 | EQU5 | Output | Encoder |
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| 18 | EQU6 | Output | Encoder |
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| 19 | HOME7 | Input | Home Flag 7 | 10 | ||
| 20 | HOME8 | Input | Home Flag 8 | 10 | ||
| 21 | PLIM7 | Input | Positive End Limit 7 | 8,9 | ||
| 22 | PLIM8 | Input | Positive End Limit 8 | 8,9 | ||
| 23 | MLIM7 | Input | Negative End Limit 7 | 8,9 | ||
| 24 | MLIM8 | Input | Negative End Limit 8 | 8,9 | ||
| 25 | USER7 | Input | User Flag 7 |
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| 26 | USER8 | Input | User Flag 8 |
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| 27 | PUL_7 | Output | Pulse Output 7 |
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| 28 | PUL_8 | Output | Pulse Output 8 |
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| 29 | DIR_7 | Output | Direction Output 7 |
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| 30 | DIR_8 | Output | Direction Output 8 |
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| 31 | EQU7 | Output | Encoder |
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| 32 | EQU8 | 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.
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