Omron G9SP-N20S Network Connection Manual page 38

(2)These variables of the SCU Unit are used in this program.
Name Data type
SCU_P2_NopSerialS
BOOL
endExecSta
SCU_P2_NopRcvCo
BOOL
mpleteSta
SCU_P2_NopRcvCn
UINT
tSta
Additional Information
For information on variables of the Serial Communications Unit, refer to 5-2 Device Variables
for CJ-series Unit and System-defined Variables (During Serial Gateway Mode) in the
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit (Cat.No.
W494).
(3)This system variable is used in this program.
Name Data type
_Port_isAvailable BOOL
Additional Information
For information on system variables when using the serial communications instructions, refer
to SerialSend and SerialRecv in Section 2 Instruction Descriptions of the NJ-series
Instructions Reference Manual (Cat. No. W502).
●Structure
The structures used in the external variables are shown below.
(1)_sPORT
Variable Meaning
SCU_Inport Destination
port
UnitNo Unit number
PhysicP Serial port
ortNo number
(2)G9SP_CommandFormat
Variable Meaning
G9SP_Comman G9SP
dFormat command
setting
FixationArea1 Fixed area 1
SendData User
specification
area
CheckSum Checksum
area
FixationArea2 End code
area
SerialSend instruction executing flag:
ON during data send operation and OFF when the send
operation is completed.
Receive completion flag:
ON when reception of data is completed and OFF when
storing the receive data in a variable specified with the
SerialRcv is completed.
Receive counter: Stores the size of the received data.
Communications Port Enabled Flag
Description Data type
Destination port _sPORT
Unit number of SCU _eUnitNo
Unit
Serial port number of USINT
SCU Unit
Description
Specifies command
data sent to G9SP.
Sets the fixed data that
cannot be changed by
the user.
Sets communications
receive data and echo
back data that can be
changed by the user.
Sets a checksum value.
Sets the end code
(#16#2A0D).
9. Project File
Description
Description
Valid range
－
_CBU_No00 to _CBU_No00
_CBU_No15
1 or 2 1
Data type Valid range
G9SP_Comm -
andFormat
USINT[8] Fixed
USINT[6] #16#00 to
16#FF
UINT #16#00 to
#16#FF
USINT[2] Fixed
Default
Default
-
-
-
-
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