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CHAPTER 11 TROUBLESHOOTING
11
11.
6
T
roubleshoot
ing by
S
ympt
om
(3) When the output status of the extension output module differs from the link
device status of the master station
(4) When parameter read or write, or CC-Link IE Field Network diagnostics fails by
engineering tool
Check item
Action
Is the setting of the external signal assignment function
correct?
Check that the following settings are not used in the external signal assignment function.
• Alert output signal assignment (
• Error flag assignment (
• Warning flag assignment (
Check item
Action
Is the D LINK LED of the main D/A converter module on?
Check the D LINK LED of the main D/A converter module and if it is not on, perform
troubleshooting by referring to the following:
• When the D LINK LED turns off (
• When the D LINK LED flashes (
Check for other LEDs by referring to the following:
• Checking the LEDs (
Is the version of the module on the master station correct?
Check the serial number (first five digits) of the module on the master station, and if the
version is prior to the correct one, replace the module with a module of the supported version.
For the supported version, refer to the following:
• Supported master station (
Is the version of the engineering tool supported?
Check the version of the engineering tool, and if it is prior to the supported versions, update
the engineering tool. For the supported version, refer to the following:
• Supported software package (
Are network parameter settings same as the settings of the
CPU module?
Perform "Verify with PLC" and check that network parameter settings match the settings of the
CPU module. If they differ, match the settings by performing "Read from PLC" and "Write to
PLC", and write the parameters to modules on slave stations.