5 MODULE DEDICATED INSTRUCTION
5.3 Serial Communication Instruction
51
5
5.3
Serial Communication Instruction
On-demand function transmission
G(P)_ONDEMAND
The following instruction can go in the dotted squares.
G_ONDEMAND, GP_ONDEMAND
■
Executing condition
■
Argument
*1 Local devices and file registers per program cannot be used as setting data.
Processing details
This instruction sends data using the on-demand function of MC protocol.
Instruction
Executing condition
G_ONDEMAND
GP_ONDEMAND
Input/output
argument
Name
Description
Data type
Input argument
EN
Executing condition
Bit
Un*
Start I/O number of the module
(00 to FE: Higher two digits when expressing the I/
O number in three digits)
ANY16
s1
Variable that stores control data
Array of ANY16 [0..2]
s2
Start number of the device that stores send data
ANY16
Output argument
ENO
Execution result
Bit
d
Variable that turns ON upon completion of the
instruction
d[1] also turns ON at the time of error completion.
Array of bit [0..1]
Setting
data
Internal device
R, ZR
J
\
U
\G
Zn
Constant
Others
Bit
Word
Bit
Word
(s1)
(s2)
(d)
Serial
Modem
Structured ladder/FBD
ST
G_ONDEMAND
EN
ENO
Un*
s1
s2
d
G_ONDEMAND
(EN, Un*, s1, s2, d);
ENO:=
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