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The PLC option flag 8 has no affect on the output behavior.
Port 4 as an output (as shipped):
1.Install JP1and JP2 in off (storage) position.
2.Insure that P4 input option flag 32 (“ l” command) is off.
Port 4 is controlled by the “A 8” (flag 8) command and read back with the A 129 command. The step pulse is output to P4 when the step/direction out (option flag 2) is set.
Port 5 is an output only. It is turned on with “A 16” command (flag 16). Setting option flag 4 will convert P4 to a moving status output.
Port | Flag | Port | Flag |
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|
|
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1 | 1 | 4 | 8 |
2 | 2 | 5 | 16 |
3 | 4 | 129 | Read Port |
Reading the port data (A 129) provides the following result information:
Data | Cause (Standard Mode) | Cause (PLC Mode) |
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|
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1 | Low input present on port 1 | High input present on port 1 |
2 | Low input present on port 2 | High input present on port 2 |
4 | Low input present on port 3 | High input present on port 3 |
8 | Low input present on port 4 | High input present on port 4 |
3 | Low on ports 1 and 2 | High on ports 1 and 2 |
15 | Low on ports 1, 2, 3 and 4 | High on ports 1, 2, 3 and 4 |
Flags are the binary “weight” of the decimal value (0, 1, 2, 4, 8, 16, 32, 64 and 128 for an
Programming Example
The following example program shows how to turn on an output port. Some uses for this could be illuminating an LED to signal a sequence is complete, or to operate a valve.
P 0 Enter program mode.
A 4 Turn on port 3.
W 60 Wait 600milliseconds.
A 6 Turn on port 2 and 3. W 10 Wait 100ms.
A 0 Turn off all ports.
P0 Exit program mode.
Note: the actual ports usable for output is determined by the hardware design. AMS products generally define ports 4 and 5 as outputs.
3 5