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PLC Function Specifications
1
PLC FUNCTION
1.2 PLC Function Specifications
The following table indicates the program capacity and devices of the PLC function.
*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.
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 1.9µs to 12µs/step(*2)
Number of I/O points
128 (X: 64 points, Y: 64 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
Devices
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
Timer (T)
Points 16
Specifications
100ms timer: Set time 0.1 to 3276.7s (T0 to T15)
10ms timer: Set time 0.01 to 327.67s
100ms retentive timer: Set time 0.1 to 3276.7s
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