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E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-172
API Mnemonic
Operands
Function
60
IST
S, D
1
, D
2
Manual/Auto Control
Bit Devices
Word devices
Program Steps
Type
OP
X Y M S K H KnX
KnY
KnM KnS T
C D E
F
S
*
*
*
D
1
*
D
2
*
IST: 7 steps
ELC ELCB
ELCM
PB PC/PA/PH
PV
PB PH/PA
32 16
P
32 16
P
32 16
P
32 16 P 32 16 P
Operands:
S
: The starting input address (Operand
S
will occupy 8 continuous addresses).
D
1
The smallest
number for the designated-status step point in auto mode.
D
2
: The greatest number for the
designated-status step point in auto mode.
Description:
1.
The IST is a convenient instruction made specifically for the initial state of the step function
control procedure.
2.
ELC-PB, ELCB-PB model, the range
D
1
and
D
2
= S20~S127 and
D
1
<
D
2
.
ELC-PC/PA/PH/PV
models, the range
D
1
and
D
2
= S20~S899 and
D
1
<
D
2
.
ELCM-PH/PA models, the range
D
1
and
D
2
= S20~S911 and
D
1
<
D
2
.
3.
IST instruction can only be used one time in a program.
Program Example 1:
M1000
IST
X20
S20
S60
S:
X20: Individual operation (Manual operation)
X21: Zero point return
X22: Step operation
X23: One cycle operation
X24: Continuous operation
X25: Zero point return start switch
X26: Start switch
X27: Stop switch
1.
When the IST instruction is executed, the following special auxiliary relays will switch
automatically.
M1040: Movement inhibited
M1041: Movement start
M1042: Status pulse
M1047: STL monitor enable
S0: Manual operation/initial state step point
S1: Zero point return/initial state step point
S2: Auto operation/initial state step point
2.
When the IST instruction is used, S10~S19 are for the zero point return operation and the step
point of this state can’t be used as a general step point. However, when using S0~S9 step
points, S0 initiates “manual operation”, S1 initiates “zero point return operation” and S2
Содержание ELC-PB
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