Mitsubishi Electric MELSEC-LD77MS2 User Manual page 901

Related buffer memory address
LD77MS2
LD77MS16
LD77MS4
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Set range
(Setting with sequence program)
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16 - 17
Chapter 16 Troubleshooting
Remedy
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Check that there is no influence from noise.
Review the program which turns ON/OFF PLC READY signal
[Y0].
Check the servo amplifier power, wiring with the servo
amplifier, and connection of connectors.
Check that there is no error on the personal computer side I/F
to which a cable is connected.
After making an axis error reset (refer to [3] in Section 16.4),
perform manual control operation (refer to Chapter 11) to
move the axis to the other position in order that the upper
limit signal (FLS) will not turn OFF.
• Check the wiring of upper limit signal FLS.
• Check if the specification of the limit switch and the setting of
the "
Input signal logic selection
Pr.22
• If hardware stroke limit (limit switch) is unnecessary system
for installation, wire to always turn ON the upper limit signal
(FLS) input of the Simple Motion module.
After making an axis error reset (refer to [3] in Section 16.4),
perform manual control operation (refer to Chapter 11) to
move the axis to the other position in order that the lower
limit signal (RLS) will not turn OFF.
• Check the wiring of lower limit signal RLS.
• Check if the specification of the limit switch and the setting of
the "
Input signal logic selection
Pr.22
• If hardware stroke limit (limit switch) is unnecessary system
for installation, wire to always turn ON the lower limit signal
(RLS) input of the Simple Motion module.
After confirming the stop command status, then review the
timing of start.
" match.
" match.