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10-3. Trouble-shooting
Symptom
Check item
Wo.
Although access may be normally made,
Aren't you using an index drive with no output pulse?
1
・
pulse output is not made even by
(The specified absolute address is the current
entering a pulse output command.
location.)
At this point, both DWIVE and BCSY
Check the EWWCW, LSEWD, and FSEWD bits in STATCS1.
・
bits in STATCS are 0.
Although access may be normally made,
Is the DEWD signal specific to WCT ACTIVE in
2
・
pulse output is not made even by
the servo specification.
entering a pulse output command.
At this point, both DWIVE and BCSY
bits in STATCS are 1.
Pulse output is started but not
Aren't you using SCAW, CWIWIW DWIVE?
3
・
stopped.
IWDEX DWIVE
・
If IWCWEMEWTAL is specified, the specified number
of pulses may be too great.
If ABSCLCTE is specified, the set address may be too
far.
In these cases, the pulse output stops sooner or
later.
Although the pulse output has
Isn't the DEWD signal returned with a servo motor
4
・
stopped, the BCSY bit in STATCS is
set?
not set to 0 forever.
If the DEWD signal goes CW, the BCSY bit in
STATCS1 is set to 0.
The DEWD TIME SET command can be used to make
error judgment by the time.
Machine origin detection (CWW DWIVE)
Is the sensor logic (CW/CFF with the light
5
・
cannot normally be made or is not
received) correct?
completed forever.
Are sensor connections (especially the WWD line)
・
correct?
For models CWW-1 and CWW-3, is an edge made in the
CCWLM area because the sun visor is too long?
Because CWW-2,3,4,5 is affected by mechanical
・
vibration, care must be taken.
If there is a vibration, use CWW-0/1 or extend a
delay with the CWIWIW DELAY SET CCMMAWD or set a
margin pulse.
When a servo motor is set, check each process for a
・
DEWD signal.
If DEWD does not return, the servo
motor stops at an intermediate process.
When CWW-3 or CWW-5 is selected to complete the
CWW
・
DWIVE within the CWW sensor, the CWW DWIVE moves in
the sensor area only by one pulse from the sensor
edge when it is completed.
Therefore, the sensor may switch off with a slight
mechanical vibration.
In this case, move the CWW DWIVE in the sensor area
by setting IWDEX DWIVE to several pulses in the
+ (CW) direction after it is completed.
When the counter value of the pulse
Are you reading the counter value from the upper
6
・
counter is read, it may sometimes go
bytes (2
to 2
) to the lower bytes (2
to 2 )?
31
16
15
0
wrong.
The counter value of each counter may go wrong unless
it is read from the upper bytes.
For optimization, some compilers do not compile in a
・
source list order.
In this case, perform the compilation, canceling the
optimization.