Omron FZ4 Series, User Manual, Page: 580 / 656

8
Appendixes
578 FAQ FZ4 User's Manual
* A setting window is defined as a window that opens separately such as the Edit Flow window
and the Scene Maintenance window.
Signals cannot be output to external devices
●
Is the trigger signal input?
●
Are the cables connected correctly?
●
Is the signal cable disconnected?
You can check the communication status in the Confirmation window.
Reference:
Checking Communication Status (Parallel Interface) (p.542)
●
Is test measurement being performed?
Data cannot be output to external devices during test measurement.
GATE signals are not output
Wiring:
●
Are parallel cables wired correctly?
Please check if GATE signals are being recognized by the receiving side (such as the PLC) by
turning the GATE signal ON/OFF in the System - Communication - Parallel - Confirmation
window.
Output setting:
●
Is parallel judgement output or parallel data output set for the scene? Is an expression input for
parallel data output?
GATE signals are not output unless these items are specified.
●
Is "Output" checked on the ADJUST window?
Measure on the RUN window or measure on the ADJUST window upon checking "Output" in the
test measurement settings.
Timing:
●
Are the parallel communication settings (output cycle and output time) set to a length sufficient
for the PLC to recognize?
●
Could the System - Communication - Parallel output control be set to handshaking or
synchronization output?
These settings influence the GATE output timing.
Reference:
Controlling/Outputting through Parallel Communication > Timing Chart (p.547)
About Serial Interface (RS-232C/422 Connection)
No communication available
●
Are the cables connected correctly?
●
Are the communication specifications of the external devices compatible with the controller?
You can check the communication status in the Confirmation window.
Reference:
Checking Communication Status (Non-procedure) (p.441)
The controller works fine initially, but there is not response after a while
●
Is the buffer memory of the PC full?
Please verify if data can be received correctly based on current settings.
Acesst 1.0 6251194