Omron CJ1W-DRM21, CS1W-DRM21 operation manual Starting and Stopping Remote I/O Communications

Starting and Stopping Remote I/O Communications Section 4-5

Configurator Setting Methods

Refer to the DeviceNet Configurator Operation Manual (W382) for setting methods.

4-5 Starting and Stopping Remote I/O Communications

4-5-1 Starting Remote I/O Communications

Remote I/O communications start automatically after the power is turned ON or the Unit is restarted.

The I/O Data Communications Flag (word n+12, bit 15) is turned ON when remote I/O communications is started with at least one slave.

4-5-2 Stopping Remote I/O Communications

	Remote I/O communications stop under the following user-controlled condi-
	tions. Message communications can still be performed when the remote I/O
	communications stop.
Stop Communications	Remote I/O communications stop when the Remote I/O Communications
With All Slaves	Stop Switch (word n, bit 04) is turned ON.
Stop Communications	Remote I/O communications stop when the Disconnect/Connect Switch for
With a Specified Slave	the desired slave (words n+6 to n+9) is turned ON. (Units are disconnected
	from remote I/O communication when the Disconnect/Connect Switch is
	turned ON.)
Note	The communications cycle time is not shorter even though a slave has been
	disconnected from remote I/O communications by turning ON the Disconnect/
	Connect Switch. (Blank time in the communications cycle will only be
	increased.)

4-5-3 Restarting Remote I/O Communications

Remote I/O communications restart under the following conditions,

Restart Communications Remote I/O communications restart when the Remote I/O Communications

with All SlavesStart Switch (word n, bit 01 or 03) is turned ON. (Only communications with slaves stopped using the Disconnect/Connect Switch will be restarted.)

Restart Communications Remote I/O communications restart when the Disconnect/Connect Switch for

with Specified Slave the desired slave (words n+6 to n+9) is turned ON. Restoring the unit will have been completed when the Disconnect/Connect Switch turns OFF.)

4-6 Example of Ladder Programming for Remote I/O Communications

When writing ladder programming for remote I/O communications, make sure it performs I/O processing with a Slave under the following conditions:

•The I/O Data Communications Flag (word n+12, bit 15) is ON.

•The Unit Error Flag (word n+10, bit 00) is OFF.

Example: There is no jump and slave I/O is processed when the JMP(004) instruction input condition is ON in the following instructions. There is a jump and slave I/O is not processed when the JMP(004) instruction input condition is OFF.

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