When the safety remote I/O module cannot be accessed using the engineering tool
Is the D LINK LED on?
Is the version of the module on the master
Is the version of the engineering tool supported?
Do the network parameter settings of the master
station and those of the Safety CPU match?
10.5 Troubleshooting by Symptom
Check the D LINK LED. When the LED is not on, refer to the following to perform troubleshooting.
• Page 81 When the D LINK LED turns off
• Page 81 When the D LINK LED flashes
Refer to the following to check other LEDs.
Page 79 Checking the LEDs
Check the firmware version of the module on the master station, and if the version is not the applicable one,
replace the module with a module of the applicable version or later. For the applicable version, refer to the
Page 33 Applicable products
Check the version of the engineering tool, and if the version is not the applicable one, update the
engineering tool. For the applicable version, refer to the following.
Page 33 Software package
Perform "Verify with PLC" on the network parameters to check that those settings match. When they do not
match, execute "Write to PLC" and "Read from PLC" to match the network parameter settings, and write
the module parameters of the slave station.