Filter
Top Products
13 Applied Instructions (Handy Instruction)
13.1 IST / Initial State
315
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Applied Instructions
(Data Operation)
12
Applied Instructions
(High Speed
Processing)
13
Applied Instructions
(Handy
Instruction)
14
Applied Instructions
(External FX I/O
Device)
15
Applied Instructions
(External Device
(optional device))
16
Applied Instructions
(External Device)
17
Applied Instructions
(Data Transfer 2)
18
Applied Instructions
(Floating Point)
19
Applied Instructions
(Data Operation 2)
20
Applied Instructions
(Positioning
Control)
IST command equivalent circuit
Detail of special auxiliary relay (M) or initial state (S0 to S9) controlled automatically by IST command is as
shown in the following equivalent circuit. (Read as reference knowledge.)
This equivalent circuit cannot create program.
1. Equivalent circuit
*1. Equivalent circuit is presented for explanation, and it cannot be actually programmed as shown
herein.
2. Changeover of operation mode
When the modes are changed over in individual, return home, and automatic modes, unless the machine is at
home position, all outputs and former states are reset in batch. (When M8045 is driven, all outputs
*1
are not
reset.)
*1. All outputs: outputs not driven from the state of the device designated in (Y), and outputs driven
by OUT, SET commands from the state of the device designated in (Y).
X024 M8041
M8041
Conti-
nuous
X027
M8041 is put in action when start button is
pressed in automatic mode. In continuous mode,
self-holding action is set, and it is canceled
Stop
X022 Stepping
X023
One-
cycle
X024
Conti-
nuous
Transfer
start
X026
Automatic start
X026 Automatic start
X020
Individual
X025
Return home
start
X020
M8040
Individual
Transfer ban
X021
Return
home
X027 Stop M8042
Start pulse
X022 Stepping
X023
One-
cycle
X027 Stop
M8002 Initial pulse
M8040 Self-holding
M8000
M8047
RUN monitor
STL monitor valid
X020 Individual
S 0
M8044
Home
M8043
Return home end
X021 Return home
S 1
X025
Return
home start
X022 to X024
Automatic
Return
home end
M8043
M8041
Transfer start
S 2
M8040 is put in action in stepping mode, and is
turned OFF every time start button is pressed.
In return home or one-cycle mode, self-holding
action is set when stop button is pressed, and
it is canceled when start button is pressed.
Initial state is changed over depending on each
mode input, and M8043 is also controlled.
However, M8044 and M8043 must be also
controlled by the user program.
*1
*1
*1
Start pulse
M8042
*1
PLS
EN ENO
d
Return home
end signal reset
M8043
RST
EN ENO
d
when stop button is pressed.
position
condition
Return home
X021
Automatic
X022 to X024
S1 M8043
Changeover
to
individual
X020
Return
home end
S2
Batch resetting of former
states, and resetting of
related OUT output.
Individual
X020
Automatic
X022 to X024
Changeover
to return
home
X021
S2
All outputs Y are reset
when M8045 is OFF.
All output reset ban
M8045
If changed over from automatic to return home during action of S2, the states other than initial state and outputs are not reset.