Omron CJ1W-DRM21, CS1W-DRM21 operation manual Communications Flags, Communications Flag Operation

Using FINS Message Communications											Section 6-3
			Execution	Network			Message
			condition	Enabled Flag			Communications
							Permitted Flag
										SEND(090), RECV(098), or CMND(490)
						word n+24, bit 12
Communications Flags
Type	Name				Address						Content
			Word					Bit
CPU Unit	Network Enabled Flag	A202			7 6 5 4 3 2 1 0						0: Execution not possible (execut-
											ing)
											1: Execution possible (not execut-
					7 6 5 4 3 2 1 0
											ing)
						Port Port	Port Port Port Port Port Port
	Network Error Flag	A219			7 6 5 4 3 2 1 0						0: Normal completion
											1: Error
						Port 7 Port 6	Port 5 Port 4 Port 3 Port 2 Port 1		Port 0

Communications Flag Operation

•The Network Enabled Flag turns OFF when instructions are being sent or received (from when the instruction is issued until the response is received) and turns ON when the execution has been completed, whether normally or with an error.

•The Network Error Flag maintains its status until the next send or receive is executed.

•The Network Error Flag turns OFF when the next communications instruction is executed, regardless of whether the previous execution ended with an error.

•The relationship between the Message Communications Permitted Flag and the NS indicator and between the Message Communications Permit- ted Flag and the NS indicators on the front of the DeviceNet Unit is shown

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