Omron CS1W-ETN21 operation manual Troubleshooting Procedures, Startup Problems

Troubleshooting Procedures Section 8-4

8-4 Troubleshooting Procedures

The following procedures can be used to troubleshoot various problems in system operation.

8-4-1 Startup Problems

Startup Problems occurred.

	N		N		Y	Is the node	N
RUN indicator lit?		ERH indicator lit?		ERC indicator lit?		address set between
						01 and FE Hex?
Y		Y		N		Y
						Replace the Ethernet Unit.
				Power supplied	N	Make sure that sufficient
						power is supplied to the
				to CPU Unit?
						CPU Unit.
				Y
				Ethernet Unit	Y	Make sure that Unit is firmly
						mounted and tighten the
				loose on Rack?		mounting screws firmly or
						lock the sliders into place.
				N
				Do the RUN and ERH	Y
						Replace the CPU Unit that
				indicators not light if another
						didn't work.
				CPU Unit is mounted
				to the Rack?
				N
				Replace the Ethernet Unit.
		Is the same node	N
				Create the I/O tables in
		number used by another
				the CPU Unit.
		Unit?

Y

Set the node numbers so that each one is used only once.

Set the node address to between 01 and FE Hex.

ERH indicator not lit?	Y	Is the same unit	Y	Set the unit numbers correctly.
		number used by another
		CPU Bus Unit?
N		N
		Has a CPU Unit error	Y
				Restart the CPU Unit. If the error persists, replace the CPU
		occurred in the CPU Unit?		Unit.

N

Set the Unit Setup and routing tables correctly.

ERH indicator not	Y	Is the IP address correct? N
flashing?

Correct the IP address in the System Setup, and read out the controller status using the READ CONTROLLER STATUS command in FINS communications and correct any problems indicated.

N

Y

Make sure that the node number and the last byte of the IP address are the same and set other host IDs to 0, or change the address conversion method to use and IP address table or combined methods.

Go to Network Connection Problems

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