Omron CS1W-DRM21, CJ1W-DRM21 operation manual Message Communications Error Indications, List

Overview				Section 6-1
	Item			Specification
Response monitoring time			Default setting:	2 s
			User setting:	0.1 to 6553.5 s
Retries			0 to 15
FINS mes-	Received from CS/CJ-		Supported (Data send/receive or FINS commands).
sage com-	series CPU Unit with CS/
munications	CJ-series DeviceNet Unit
commands
	Received from CVM1/CV-		Not supported.
	series CPU Units with
	CVM1/CV-series DeviceNet
	Master Unit
	Received from CS/CJ-
	series and C200HX/HG/HE
	CPU Units with C200H-
	series DeviceNet Master
	Unit
	Received from C200HX/HG/
	HE Units with C200H-series
	DeviceNet Master Unit
Internetwork connections		Same net-	Supports internetwork communications between DeviceNet networks with
		work type	CS/CJ-series DeviceNet Units mounted (up to 3 levels).
		Different net-	Supports internetwork communications between DeviceNet networks with
		work type	CS/CJ-series DeviceNet Units mounted and other networks (Controller
			Link, SYSMAC LINK, and Ethernet; up to 3 levels).
Message monitor timer function (explicit			The response monitoring time for DeviceNet Units during explicit message
message communications)			communications (the interval the explicit connection is open) can be set
			from the Configurator for each device. (The settings for all devices can be
			stored in the DeviceNet Unit. This is called the Message Monitoring Timer
			List.)

6-1-5 Message Communications Error Indications

There are two ways to obtain information on communications errors that occur in message communications: 1) Using the error history in the DeviceNet Unit and 2) Using DeviceNet Unit displays, indicators, and Master Status Areas.

1,2,3... 1. Each time a communications error occurs, an error code is placed in an er- ror record in the error history kept in the RAM of the DeviceNet Unit. Up to 64 records can be stored in the error history. The time and data the record occurred is also recorded.

The error history can be read or cleared from the CPU Unit by sending an FINS command to the DeviceNet Unit (Error History Read/Clear). The con- tents of the error history can also be monitored from the Configurator.

Code

Code

Code

64 records

FINS command Read-out

Monitor

CPU Unit

Configurator

2.The MS and NS indicators and the 7-segment display on the front panel of the DeviceNet Unit can be used together with the Master Status Area 1 in the CPU Unit to obtain information on a communications error that has oc- curred. This information can be used as the basis for troubleshooting.

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