Omron CJ1W-DRM21 List of PLC Object Services, PLC Objects provide the following services

Receiving Explicit Messages Section 6-5

•PCs with CVM1/CV-series DeviceNet Master Units (CVM1-DRM21-V1)

•PCs with CS/CJ-series DeviceNet Units

Example

CS/CJ-series	C200H-series
DeviceNet Unit	DeviceNet Master Unit C200HX/HG/HE

CS/CJ-series CPU Unit	CPU Unit
	Other manufacturer master
Explicit messages can
be received
Explicit message
DeviceNet

Note Status and the I/O memory read/write operations cannot be performed for PCs with a C200H-series or CVM1/CV-series DeviceNet Master Units. The CPU Unit of a CS/CJ-series DeviceNet Unit can also send an explicit mes- sage to read/write I/O memory of PCs with C200H I/O Link Units.

6-5-1 List of PLC Object Services

PLC Objects provide the following services.

Status Read/Write for CPU Units

Services	Service	Class ID	Instance ID	Request	Contents
	code			service data
CPU Unit Informa-	0E Hex	2F Hex	00 Hex	Attribute ID =	Reads the operating mode of the
tion Read				64 Hex	CPU Unit.
				Attribute ID =	Reads if there is a fatal or non-fatal
				65 Hex	error in the CPU Unit.
				Attribute ID =	Reads CPU Unit model.
				66 Hex
CPU Unit Write	10 Hex			Attribute ID =	Changes the operating mode of the
				64 Hex,	CPU Unit.
				Attribute Value
				Attribute ID =	Clears errors.
				65 Hex
				Attribute Value
CPU Unit Status	40 Hex			None	Reads the detailed status of the CPU
Read					Unit.
					Operation status: Stop, run, CPU
					standby
					Operating modes: PROGRAM, MON-
					ITOR, RUN
					Fatal error information: Error flags,
					including memory errors, I/O bus
					errors, system errors
					Messages: Message No. when MSB
					instruction executed by CPU Unit
					Error codes: Error code for the most
					serious errors
					Error messages: Messages stored in
					CPU Unit when FAL/FALS instruction
					executed

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