Mitsubishi Electronics FR-A700, 700 Series PLC Function Specifications, A700 Sequence Section

PLC Function Specifications

1.2 PLC Function Specifications

The following table indicates the program capacity and devices of the PLC function.

			A700 Sequence Section
Control method			Repeated operation (by stored program)
I/O control method			Refresh
Programming language			Relay symbolic language (ladder mode)
			Logic symbolic language (list mode)
Number of instruction	PLC instructions		23
	Basic instructions		32
	Application instructions		18
Processing speed			PLC instruction 1.9∝s to 12∝s/step(*2)
			128 (X: 64 points, Y: 64 points)
Number of I/O points			19 points installed, X: 12 points, Y: 7 points (*1)
			FR-A7AX, X: 16 points
			FR-A7AY, Y: 6 points
			FR-A7AR, Y: 3 points
Number of analog I/O points			5 points installed, Input: 3 points, Output: 2 points
			FR-A7AY output: 2 points
Watchdog timer			10 to 2000(ms)
Memory capacity			6k bytes used by sequence and parameters.
Program capacity			1k step
	Internal relay (M)		64(M0 to M63)
	Latch relay (L)		None (Can be set with parameters but will not latch)
	Step relay (S)		None (Can be set with parameters but will operate as M)
	Link relay (B)		None
		Points	16
	Timer (T)		100ms timer: Set time 0.1 to 3276.7s (T0 to T15)
		Specifications	10ms timer: Set time 0.01 to 327.67s
			100ms retentive timer: Set time 0.1 to 3276.7s
Devices	Counter (C)	Points	16
		Specifications	Normal counter: Setting range 1 to 32767 (C0 to C15)
			Interrupt program counter: None
	Data device (D)		120(D0 to D119)
	Link register (W)		None
	Annunciator (F)		None
	File register (R)		None
	Accumulator (A)		None
	Index register (Z, V)		None
	Pointer (P)		None
	Interrupt pointer (I)		None
	Special relay (M)		256 (M9000 to 9255) with function limit
	Special register (D)		256 (D9000 to 9255) with function limit

*1 These signals use the same terminals as used by the input and output signals given in the common specifications of the inverter.

One point is always necessary for a sequence start (RUN/STOP).

*2 As inverter control is also performed actually, the scan time is approximately 40ms at 500 steps.

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PLC FUNCTION

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