Omron NX-EC0112, Руководство пользователя

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8 Pulse Output Units
NX-series Position Interface Units User’s Manual (W524)
8-
10 Fu
nct
ions
8
8-1
0-4 External Output
The Pulse Output Unit has one output port for an external output.
If you use this output port with the MC Function Module, you can use it as an error counter reset output
when the homing operation is completed.
Otherwise, this output is used as a general output.
When the external output is set as a general output, you can manipulate the bit for the external output
that was assigned as a device variable to turn that external output ON or OFF.
When the External Output 0 Function Selection parameter is set for an error counter reset output, the
Pulse Output Unit will automatically turn ON external output 0 (O0) when latch 1 is triggered. The out-
put stays ON for 20 ms.
When you connect a Pulse Output Unit to a Servo Drive, you can use this function to reset the Servo
Drive’s error counter reset output when the home input of the homing operation of the MC Function
Module is detected.
Precautions for Correct Use
• If the error counter reset output is set for the external output function, the output turns ON
automatically when the latch 1 of the current value latch is triggered. This function is
designed for homing when the Unit is used with the MC Function Module. For all other pur-
poses or if you do not want to reset the following error counter, set the external output func-
tion for a general output and do not use the error counter reset output.
• If you use the error counter reset output, you cannot use latch 1 for a standard latch function.
Latch 1 is used for the homing operation. Use latch 2 if you need a standard latch.
• The response time from the latch 1 input signal until the error counter reset output is 250 μ s
maximum.
8-10-4 External Output
Parameter name Setting Default Remarks
External Output 0
Function Selection 0: General output
1: Error counter reset output 0 Changes are applied when the power sup-
ply to the NX Unit is turned ON or the NX
Unit is restarted.
External Output 0
Logic Selection 0: N.O. (Normally open)
1: N.C. (Normally close) 0
Error Counter Reset Output
External output bit
External Output 0 Function Selection:
Error counter reset output
Latch 1 triggered (automatically
controlled by the Unit)
External
output 0 OR
AND