0BChapter 4
Troubleshooting
4-2
Troubleshooting
4.1 Flow of troubleshooting
If some problem occurs, check the sections according to the following items.
Confirm the operation status of the Model KM1 according to the
operation indicator LED.
⇒
4.2 To "Assume based on operation indicator LED"
Check the switch settings and wiring.
• Switches
Check that the settings are made according to the system in use.
⇒
To Page 1-8
• Wiring
Wiring of terminal block
⇒
To Page 2-14
Check for a wire coming off.
Check for disconnection or contact of wire/cable in use.
• Communication
condition
Check that the conditions for communication with high-level
systems are met.
If no problem is found after the check, perform detailed
investigation based on communication functions.
Check the condition by reading the status of the Model KM1 according
to communication functions.
⇒
4.3 To "Assume based on the status"
Assume the cause of the problem based on the phenomena to take
measures.
⇒
4.4 To "Assume based on phenomena"
Checking operation
indicator LED
Check switches/wiring.
Assumption from status
Assumption from
phenomena
