Mitsubishi Digital Electronics FX0 Manual

A SERVICE OF

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FX Series Programmable Controlers Applied Instructions 5

5-68

e) The available operatin

g

modes are split into two main

g

roups, manual and automatic. There

are sub-modes to these

g

roups. Their operation is defined as:

Manual

Manual (selected b

y

device S+0)- Power suppl

y

to individual loads is turned ON and OFF b

y

usin

g

a separatel

y

provided means, often additional push buttons.

Zero Return (selected b

y

device S+1) -Actuators are returned to their initial positions when the

Zero input (S+5) is

g

iven.

Automatic

One Step (selected b

y

device S+2)- The controlled sequence operates automaticall

y

but will

onl

y

proceed to each new step when the start input (S+6) is

g

iven.

One C

y

cle (selected b

y

device S+3) - The controlled actuators are operated for

one

operation

c

y

cle. After the c

y

cle has been completed, the actuators stop at their ‘zero’ positions. The

c

y

cle is started after a ‘start’ input (S+6) has been

g

iven.

A c

y

cle which is currentl

y

bein

g

processed can be stopped at an

y

time b

y

activatin

g

the ‘stop’

input (S+7). To restart the sequence from the currentl

y

‘paused’ position the start input must be

g

iven once more.

Automatic (selected b

y

device S+4)-Full

y

automatic operation is possible in this mode. The

pro

g

rammed c

y

cle is executed repeatedl

y

when the ‘start’ input (S+6) is

g

iven. The currentl

y

operatin

g

c

y

cle will not stop immediatel

y

when the ‘stop’ input (S+7)is

g

iven.

The current operation will proceed to then end of the current c

y

cle and then stop its operation.

Note

: Start, stop and zero inputs are often

g

iven b

y

additional, manuall

y

operated push

buttons.

Please note that the ‘stop’ input is onl

y

a pro

g

ram stop si

g

nal. It

cannot

be used as a

replacement for an ‘Emer

g

enc

y

stop’ push button. All safet

y

, ‘Emer

g

enc

y

stop’ devices should

be hardwired s

y

stems which will effectivel

y

isolate the machine from operation and external

power supplies. Please refer to local and national standards for applicable safet

y

practices.