Mitsubishi FX2N-10GM, Hardware / Programming Manual

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FX Series Positioning Controllers Program format 5
5-44
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).
* Can be driven even without a contact instruction.
Table 5.17: Basic sequence instructions
Symbol and
name
Function
Circuit indication and applica-
ble devices
Description
LD
Load Operation start
Normaly open contact
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.)
LDI
Load inverse Operation start
Normaly close contact
AND
And Series connection
Normaly open contact
ANI
And inverse Series connection
Normaly close contact
OR
Or inverse Parallel connection
Normaly open contact
ORI
Or inverse Operation start
Normaly close contact
ANB
And block Series connection
between blocks
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.
ORB
Or block Parallel connection
between blocks
SET
Set Operation-maintaining
coil instruction
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.
RST
Rset Operation-canceling
coil instruction
NOP
No operation
No operation
Used to erase a program or
enter spaces.
X,Y,M
SET,RST,FNC
X,Y,M SET,RST,FNC
X,Y,M
SET,RST,FNC
X,Y,M
SET,RST,FNC
X,Y,M SET,RST,FNC
X,Y,M SET,RST,FNC
SET,RST,FNC
SET,RST,FNC
Y,M
SET
*
RST
Y,M
*