Omron H8PS Operation Manual page 122

APPENDICES
■
Problems in RUN Mode Operation
Symptom
Some angle display values
are skipped.
Nothing appears in the bank
number display area.
The operation differs from
that of the intended program.
The step number does not
increase above a certain
value even when the STEP
key is pressed.
Some cams are not dis-
played when the CAM key is
pressed.
The output ON/OFF timing
changes depending on the
speed.
The actual ON/OFF timing
differs from the programmed
timing.
The E21 error message
appears although the actual
speed is lower than the max-
imum response speed.
The speed is not displayed
when in run.
A-8
Probable cause
A 256 resolution/rotation
(360° notation display)
encoder is used.
The bank function is disabled
(16-/32-output models).
An 8-output model is used.
The operation is controlled in
accordance with a wrong
bank.
The step number limit func-
tion has been set.
Cam protection is set.
An ADV function setting has
been made.
An ADV function setting is
made for more than four
cams.
Running in the test mode.
Corrective action
Since the encoder angle is converted to 360° nota-
tion to display, some angle values are not dis-
played.
Refer to "Appendix E Angle Data Table (256 Reso-
lution)"
Enable the bank function using the F7 menu (bank
enable/disable) in the function setting mode.
Refer to "4.8.5 Enabling the Bank (F7)"
The bank function is available only with 16-/32-out-
put models and is not provided on an 8-output
model.
Check if the active bank number is the one of the
programmed (desired) bank.
The step number limit function is enabled to pre-
vent setting errors.
To change the set limit on the number of steps, use
the F5 menu (step number limit) in the function
setting mode.
Refer to "4.6 Step Number Limit (F5)"
The cam protection function is enabled to stop dis-
playing specific cams in order to prevent setting
errors.
To change the setting for the cam protection func-
tion, use the F6 menu (cam protection) in the func-
tion setting mode.
Refer to "4.7 Cam Protection (F6)"
Check the ADV function setting of the target cam.
Refer to "4.2 Advance Angle Compensation (ADV)
Function"
If ADV function settings are made for more than
four cams, the maximum response speed is low-
ered.
If the operation does not allow the speed to be low-
ered, reduce the number of cams for which an
ADV function setting is made.
Refer to "4.2 Advance Angle Compensation (ADV)
Function"
In the test mode, the speed is not displayed.
To check the speed, run in the RUN mode.