Basic Sequence Instructions - Mitsubishi FX2N-10GM Hardware / Programming Manual

FX Series Positioning Controllers
5.8

Basic sequence instructions

The sequence instructions are classified into the basic type and the application type. The for-
mat of both types is equivalent to that for the FX Series programmable controller.
These sequence instructions are used in positioning programs (including subtasks).
Table 5.17: Basic sequence instructions
Symbol and
name
LD
Load
LDI
Load inverse
AND
And
ANI
And inverse
OR
Or inverse
ORI
Or inverse
ANB
And block
ORB
Or block
SET
Set
RST
Rset
NOP
No operation
* Can be driven even without a contact instruction.
Function
Operation start
Normaly open contact
Operation start
Normaly close contact
Series connection
Normaly open contact
Series connection
Normaly close contact
Parallel connection
Normaly open contact
Operation start
Normaly close contact
Series connection
between blocks
Parallel connection
between blocks
Operation-maintaining
coil instruction
Operation-canceling
coil instruction
No operation
Circuit indication and applica-
ble devices
Used to erase a program or
enter spaces.
Program format 5
Description
The contact instructions
shown on the left are used to
drive coil instructions such
as SET, RST and the appli-
cation instructions described
later.
The applicable devices are
contacts of X (input relay), Y
(output relay) and M (auxil-
iary relay).
For example, when "LD X00"
is encountered, program
execution is not held until the
X00 is turned ON; the ON or
OFF status of the X00 is
detected and the next step is
immediately executed. (This
is true for all contact instruc-
tions.)
There are no applicable
devices for the ANB (Series
connection between parallel
circuit blocks) and ORB (par-
allel connection between
series circuit blocks) instruc-
tions.
Once the SET instruction is
driven by turning its contact
ON, it remains operational
until the RST instruction is
driven by turning its contact
ON.
The applicable devices are
coils of Y and M.
5-44