Omron CJ-Series Specifications Model, Operation method, Loop Controller element, Monitor, etc

Loop-control CPU Units

					Loop Controller Element Specifications
Loop Controller Element Specifications
	Item				Specifications
Model			CJ1G-CPU42P			CJ1G-CPU43/44/45P(-GTC)
Operation method			Function block method
Loop Controller element			LCB01			LCB03
Function	Control and	PID and other control	50 blocks max.			300 blocks max.
block analog	operation	functions, square root op-
operations	blocks	eration, time operations,
		pulse train operation, and
		other operation functions
		for various processes.
Sequence	Step ladder	Logic sequence and step	20 blocks max.			200 blocks max.
control	program	sequence functions	2,000 commands total			4,000 commands total
	blocks		100 commands max. per block			100 commands max. per block
			Separable into 100 steps max.			Separable into 100 steps max.
I/O blocks	Field terminal	Analog I/O function with	30 blocks max.			CJ1G-CPU43P: 30 blocks max.
	blocks	Analog I/O Unit, contact				CJ1G-CPU44/45P: 40 blocks max.
		I/O function with Basic I/O
		Unit
	User link	Analog data I/O and con-	2,400 data items max.
	tables	tact data I/O function for
		CPU Unit
	HMI function	I/O function for the speci-	Allocated 1 EM Area bank			Allocated 1 EM Area bank
		fied bank of the EM Area	Operation and Control blocks:			Operation and Control blocks:
		in the CPU Unit for func-	50 blocks max. ⋅ 20 send/receive words			300 blocks max. ⋅ 20 send/receive words
		tion block ITEM data used
		for Control, Operation,	System Common blocks:			System Common blocks:
		External Controller, and	20 send/receive words			20 send/receive words
		System Common blocks
		for the HMI function.
	System	System common opera-	Single block
	Common	tion cycle setting, run/
	block	stop command, load rate
		monitor, etc.
Method for creating and transferring function blocks			Created using CX-Process Tool (purchased separately) and transferred to Loop
			Controller.
External I/O response time			The time from external input of analog signals up to external output of analog signals
			on a single control loop depends on the function block's operation cycle and the
			CPU Unit's cycle time.
Operation cycle			0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, or 2 s (default: 1 s) (See note.)
			Can be set for each function block.
			Note: 0.01, 0.02, and 0.05 s cannot be set for some blocks.
Internal operation		Number of control loops	• The maximum number of loops that can be used if the LCB load rate is 80% for a
			standard applications (e.g., with each loop consisting of one Ai4 Terminal, Seg-
			ment Linearizer, Basic PID, and A04 terminal) is shown in the following table.
				Operation	Maximum number	Operation	Maximum number
				cycle	of loops	cycle	of loops
				0.01 s	20 loops	0.2 s	150 loops
							(See note.)
				0.02 s	35 loops (see note)	0.5 s
				0.05 s	70 loops (see note)	1 s
				0.1 s	100 loops (see note)	2 s
			Note: Loop Controller element LCB01: 25 loops max.
Control method		PID control method	PID with 2 degrees of freedom
		Control combinations	Any of the following function blocks can be combined:
			Basic PID control, cascade control, feed-forward control, sample PI control, Smith
			dead time compensation control, PID control with differential gap, override control,
			program control, time-proportional control, etc.
Alarms		PID block internal alarms	4 PV alarms (upper upper-limit, upper limit, lower limit, lower lower-limit) and 1
			deviation alarm per PID block
		Alarm blocks	High/low alarm blocks, deviation alarm blocks

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