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Appendix - 53
MELSEC-
A
APPENDICES
Trouble type Questions/Trouble Remedy No.
Manual pulse
generator operation
Is it possible to count the pulses
when the B phase is set to "1", and
only A phase pulses are input?
Not possible.
(The D75P2 counts 1, 0, 1, 0.)
37
Can a manual pulse generator
other than the Mitsubishi MR-
HDP01 be used?
Other manual pulse generators can be used if they
conform to section "3.7 Specifications of input/output
interfaces with external devices."
38
Can one manual pulse generator
be operated connected to several
D75P2 modules?
This is possible if the system conforms to the electrical
specifications.
39
Current value change
The BUSY signal is not canceled
by the current value change.
How can it be canceled?
The BUSY signal may remain if the scan time is long.
Use a complete signal to check whether the new value
has been executed.
40
D75P2 READY signal
The D75P2 READY signal does
not turn OFF even when the
remote station READY signal
[RX(n+7)B] is turned ON.
"A parameter error" has occurred.
Confirm the error No. in the error history, and correct the
parameter.
41
M code ON signal
Is there any problem with setting
an M code ON signal OFF request
in the next scan after the M code
ON signal ON?
The D75P2 checks the M code ON signal OFF request
every "56.8ms", so there is a possibility that the M code
ON signal OFF may be delayed by a maximum of
"56.8ms" after the M code ON signal ON, even if an M
code ON signal OFF request is set.
42
In-position signal
Must an in-position signal always
be wired?
The in-position signal is not particularly used in the D75P2
processing, so it does not always have to be wired.
(In the D75P2, the input in-position signal is only output in
the monitor area.)
43
Deviation counter
clear
How long is the output time for the
deviation counter clear signal?
"10ms". 44
Is a deviation counter clear signal
output when the positioning is
complete?
A signal is not output.
The only time the D75P2 outputs a deviation counter clear
signal is for a machine zero point return.
45
How can a deviation counter clear
signal be output?
The D75P2 does not output a deviation counter clear
signal except for machine zero point returns.
46
Module
Where is the current version or
serial number of the D75P2
written?
The version or serial number is shown on the label on the
top of the module.
47
Is it possible that the delivered
module is a different version than
the version delivered 1 year ago?
That is possible. 48
Motor
The motor only rotates in one
direction.
The parameter settings on the D75P2 side may not match
those on the servo side.
Check the parameter settings.
49
Can the current motor speed be
monitored?
The speed shown on the D75P2 monitor is calculated
from the No. of pulses output from the module. Thus, the
actual motor speed cannot be monitored.
(
"
Feedrate (RWrn+2 to 3, RWrn+10 to 11)" monitors the
commanded speed. It does not show the actual speed.)
50
AD75 software
package
Can D75P2 models be used by
SW0IVD-AD75P-E models?
No. 51
Block transmission
How can it be judged that the block
transmission was carried out
normally?
If the transfer is carried out normally, "0" will be stored in
buffer memory "5103".
If the transfer ended abnormally, a warning will be stored
in the "Axis warning No. (RWrn+6, RWrn+14)"
52