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Plc function specifications, 2 plc function specifications – MITSUBISHI ELECTRIC 700 Series User Manual

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3

PLC Function Specifications

1

P

L

C

FU

N

C

TI

O

N

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)

Num

ber

o

f

ins

tru

ct

io

n PLC instructions

23

Basic instructions

32

Application instructions

18

Processing speed

PLC instruction 1.9

µs 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

D

e

vi

ces

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