Omron CJ1W-DRM21, CS1W-DRM21 Stop Slave, Select a Fixed, Allocation Area, Turn on the Slave

Fixed Allocations Section 5-2

Note 1. Enable slave communications in CS1W-DRM21 or CJ1W-DRM21 proper- ties if the Configurator is used.

2. Use Configurator Ver. 2.10 or later for the CJ1W-DRM21.

5-2	Fixed Allocations
5-2-1	Allocated Words
				Words in the CS/CJ-series DeviceNet CIO Area in the CPU Unit are allocated.
				Words can be selected from one of three fixed allocation areas. Use a Soft-
				ware Switch to select the allocation area.
				Each area is comprised of an OUT area that is used to write data to the mas-
				ter IN area and an IN area that is used for inputs from the master OUT area in
				remote I/O communications.
	Area			OUT area		IN area		Selection method
				(master to slave)		(slave to master)
Fixed allocation area 1			CIO 3370			CIO 3270		Turn ON the Slave Fixed Allocation Set-
								ting 1 Switch (word n, bit 08).
Fixed allocation area 2			CIO 3570			CIO 3470		Turn ON the Slave Fixed Allocation Set-
								ting 2 Switch (word n, bit 09).
Fixed allocation area 3			CIO 3770			CIO 3670		Turn ON the Slave Fixed Allocation Set-
								ting 3 Switch (word n, bit 010).
				A maximum of 3 DeviceNet Units can be included as slaves in a single PC
				because the three allocation areas above are set individually for fixed alloca-
				tions. The default setting is fixed allocations area 1.
5-2-2	Procedure
Step 1: Stop Slave				If the Unit is already functioning as a Slave Unit, turn ON the Slave Stop
Communications				Switch (word n+1, bit 07) to stop slave communications. This step is not nec-
				essary if slave communications have already stopped.
Step 2: Select a Fixed				Turn ON one of the Slave Fixed Allocation Setting Switches (1 to 3: word n+1,
Allocation Area				bits 08 to 10) in the allocated CIO Area words to select a fixed allocation area
				between 1 and 3. One words is allocated for the output (OUT) area from the
				Slave Unit to the master and another word is allocated for the input (IN) area
				from the master to the Slave Unit in the CS/CJ-series DeviceNet CIO Area, as
				shown below.
						First word n = CIO 1500 + (25 x unit number)
Software switch		Software switch name			Fixed allocation area		Allocated output		Allocated input (IN)
address								(OUT) area	area
							(master to slave)		(slave to master)
Word n+1, bit 08		Slave Fixed Allocation			Fixed allocation area 1		CIO 3370		CIO 3270
		Setting 1 Switch
Word n+1, bit 09		Slave Fixed Allocation			Fixed allocation area 2		CIO 3570		CIO 3470
		Setting 2 Switch
Word n+1, bit 10		Slave Fixed Allocation			Fixed allocation area 3		CIO 3770		CIO 3670
		Setting 3 Switch
Step 3: Turn ON the Slave				Turn ON the Slave Enable Switch (word n+1, bit 06). This will allocated the
Enable Switch				fixed allocation areas as slave areas and the DeviceNet Unit will start slave
				remote I/O communications. Slave communications will run automatically
				after that whenever the power is turned ON.

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