Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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Pulse Outputs
Section 5-3
An origin search will not be started unless the origin search proximity speed is
less than the origin search high speed and unless the origin search/return ini-
tial speed is less than the origin search proximity speed.
Origin Search Error Processing
The CP1H CPU Unit's pulse output function performs a basic error check
before starting to output pulses (when the instruction is executed) and will not
output pulses if the settings are incorrect. There are other errors that can
occur with the origin search function during pulse output, which may stop the
pulse output.
If an error occurs that stops pulse output, the pulse output's Output Stopped
Error Flag will be turned ON and the Pulse Output Stop Error Code will be
written to Error Code word. Use these flags and error codes to identify the
cause of the error.
The Pulse Output Stop Errors will not affect the CPU Unit's operating status.
(The Pulse Output Stop Errors do not cause a fatal or non-fatal error in the
CPU Unit.)
Related Auxiliary Area Flags)
Pulse Output Stop Error Codes
Positioning with absolute
pulse specification Cannot be used.
Positioning with relative
pulse specification Outputs the specified number of pulses after setting the
current position to 0.
Function Operation
Function Pulse output number
0 1 2 3
Output Stopped Error Flags
ON when an error occurred while outputting
pulses in the origin search function.
0: No error
1: Stop error occurred.
A280.07 A281.07 A326.07 A327.07
Stop Error Codes
When a Pulse Output Stop Error occurs, the error code is stored in that
pulse outputs corresponding Stop Error Code word.
A444 A445 A438 A439
Error name Error code Likely cause Corrective action Operation after
error
CW Limit Stop Input
Signal 0100 Stopped due to a CW limit signal
input. Move in the CCW direction. Immediate stop,
No effect on
other port
CCW Limit Stop
Input Signal 0101 Stopped due to a CCW limit sig-
nal input. Move in the CW direction.
No Origin Proximity
Input Signal 0200 The parameters indicate that the
Origin Proximity Input Signal is
being used, but a Origin Proxim-
ity Input Signal was not received
during the origin search. Check the wiring of the Origin
Proximity Input Signal as well as
the PLC Setup's Origin Proxim-
ity Input Signal Type setting (NC
or NO) and execute the origin
search again. Turn the power
supply OFF and then ON if the
signal type setting was changed. No effect on
other port
No Origin Input Sig-
nal 0201 The Origin Input Signal was not
received during the origin
search. Check the wiring of the Origin
Input Signal as well as the PLC
Setup's Origin Input Signal Type
setting (NC or NO) and execute
the origin search again. Turn the
power supply OFF and then ON
if the signal type setting was
changed.