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5-81

G_SPBUSY

G_SP

BUSY

SPBUSY instruction

G_SPBUSY

Function

This instruction reads the data transmission/reception status.

Program Example

The following program reads out the communication status of the target module.

(For the Q series C24 whose I/O signals are X/Y00 to X/Y1F)

[Structured ladder/FBD]

[ST]
G_SPBUSY(Var_Flag, H00, D0);

(* Reads communication status *)

G(P)_SPBUSY

P: Executing condition

:

 indicates any of the following 

instructions.

G_SPBUSY

GP_SPBUSY

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

Output argument

ENO:

Execution result

:Bit

d:

Variable that stores read communication status

:ANY32

Setting

data

Internal device

R, ZR

J

\

U

\G

Zn

Constant Others

Bit

Word

Bit

Word



EN

ENO

d

Un*

G_SPBUSY

G_SPBUSY

(EN, Un*, d);

ENO:=

d

Reads communication 
status