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T1/T1S User’s Manual
7. Instructions
7.1 List of instructions
The T1 has 17 types of basic ladder instructions and 76 types of function instructions, the
T1S has 21 types of basic ladder instructions and 99 types of function instructions as
listed below. The specifications of each instruction will be described in detail later.
The tables listing these instructions are provided as a quick reference. (Note: In the
following table, italic character means operand, i.e. register, device or constant value.)
Basic ladder instructions
FUN
Name
Expression
Function
Steps Speed Available Page
No.
(
m
s)
T1 T1S
-
NO contact
A
NO (normally open) contact of
device
A.
1
1.4 - 3.3
Ö
Ö
135
-
NC contact
A
NC (normally closed) contact of
device
A.
1
1.4 - 3.3
Ö
Ö
136
-
Transitional contact
(rising)
Turns ON output for 1 scan
when input changes from OFF
to ON.
1
3.0
Ö
Ö
137
-
Transitional contact
(falling)
Turns ON output for 1 scan
when input changes from ON to
OFF.
1
3.0
Ö
Ö
138
-
Coil
A
Relay coil of device
A.
1
2.3
Ö
Ö
139
-
Forced coil
A
Forced coil of device
A. State of
device
A is retained regardless
of the input state.
1
2.3
Ö
Ö
140
-
Inverter
I
Inverts the input state.
1
1.4 - 3.3
Ö
Ö
141
-
Invert coil
A
I
Stores the inverse state of input
into device
A.
1
2.3
Ö
Ö
142
-
Positive pulse
contact
A
P
Turns ON output for 1 scan
when input is ON and device
A
changes from OFF to ON.
1
Ö
143
-
Negative pulse
contact
A
N
Turns ON output for 1 scan
when input is ON and device
A
changes from ON to OFF.
1
Ö
144
-
Positive pulse coil
A
P
Turns ON device
A for 1 scan
when input changes from OFF
to ON.
1
Ö
145
-
Negative pulse coil
A
N
Turns ON device
A for 1 scan
when input changes from ON to
OFF.
1
Ö
146
-
ON delay timer
-
[
A TON B ]
-
Turns ON output when the time
specified by
A has elapsed
after the input came ON.
B is a
timer register.
2
12.6
Ö
Ö
147
-
OFF delay timer
-
[
A TOF B ]
-
Turns OFF output when the
time specified by
A has elapsed
after the input came OFF.
B is a
timer register.
2
12.8
Ö
Ö
148
-
Single shot timer
-
[
A SS B ]
-
Turns ON output for the time
specified by
A when the input
comes ON.
B is a timer register.
2
13.0
Ö
Ö
149
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