Mitsubishi Digital Electronics FX0 Manual

A SERVICE OF

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FX Series Programmable Controllers Points Of Technique 10

10-3

10.3.2 Remote RUN/STOP control

The FX famil

y

of pro

g

rammable controllers can be controlled, i.e. switched into RUN or STOP

modes and have devices monitored b

y

use of intelli

g

ent external control devices.

These includes such items as computers, the Mitsubishi FX data access units and Graphic

Operator Terminals.

The followin

g

example utilizes a

g

raphic FX-DU unit:

Explanation:

The pro

g

rammable controller needs no special wirin

g

or additional pro

g

rammin

g

for this example.

The onl

y

condition required is that the PLC would not

normall

y

be in a RUN state, i.e., there is no connection

to the RUN terminal and the RUN/STOP switch on

PLC’s that have one is set in the STOP position.

The DU should be pro

g

rammed with 'SWITCH'

devices drivin

g

the three special M codes M8035,36

and 37. B

y

activatin

g

the 'SWITCH' devices for M8035

and M8036 the PLC can be switched into a RUN state,

while drivin

g

the 'SWITCH' device M8037 will put the

PLC into a STOP state.

Example 'SWITCH' device settin

g

opposite.

Use an 'Alternate' switch for M8035 and M8036 and use a 'Momentar

y

' switch for M8037.

(see DU operation manual for SWITCH operation and pro

g

rammin

g

)

Note: While M8035 and M8036 are ON the MPU can not be chan

g

ed to STOP mode usin

g

the

RUN terminal or RUN/STOP switch. Either set M8037 ON, or reset M8035 and M8036, to

return to the normal operatin

g

state.

Range of Mitsubishi graphic FX-DU units:

FX-25DU-E - a 4 line text/

g

raphic unit.

FX-30DU-E - a 4 line text/

g

raphics displa

y

unit with membrane st

y

le ke

y

pad.

FX-40DU-TK-E - a 7 line, touch ke

y

, text/

g

raphics displa

y

unit with numeric ke

y

pad.

FX-50DU-TK(S)-E - a 15 line, touch ke

y

, color text/

g

raphics displa

y

unit.

F940GOT-SWD/LWD-E - a 15 line, touch ke

y

, color text/

g

raphics advanced displa

y

unit.

FX

2N(C)

Remote STOP

With FX

2N(C)

units, even if the RUN terminal or RUN/STOP switch is in the RUN position, it is

still possible to do a remote STOP b

y

forcin

g

M8037 ON.

Return to RUN b

y

resettin

g

M8037.

POWER

1. Remote Mode

2. Remote Start

3. Remote Stop

M8035

M8036

M8037

SWITCH for...

SWITCH

INPUT:

0

OUTPUT: PLC M8035

MODE: ALTERNATE