2.8 Communications with an OMRON PLC (FINS Communications Service)
Message Functions
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Message Functions
The message functions are used in user communications applications for the FINS protocol. You can send
and receive message data by setting the necessary input items and parameters for the message functions.
Message communications using the FINS protocol can be performed with the same settings as those used
for MEMOBUS messages.
Inputs and Outputs for the MSG-SNDE Function
Execute
Specify the bit to use to execute the message transmission.
When the Execute Bit turns ON, the message will be sent.
Function
Name
MSG-SNDE
Function
Sends a message to a remote station on the specified circuit of the communications device type.
This function can be used with various protocols.
Function
Definition
I/O Definitions No. Name
I/O
Designation
Description
Input Items
1 Execute B-VAL Executes the transmission.
2 Abort B-VAL Forces the transmission to end.
3 Dev-Typ I-REG
Communications device type
218IFD = 16
4 Pro-Typ I-REG
Communications Protocol
MEMOBUS = 1, No-protocol communications 1 = 2,
No-protocol communications 2 = 3
5 Cir-No I-REG
Circuit number
218IFD = 1 to 8
6 Ch-No I-REG
Communications buffer channel number
218IFD = 1 to 10
7 Param Address input
First address of parameter list
(MA or DA)
Output Items
1 Busy B-VAL Processing.
2 Complete B-VAL Process completed.
3 Error B-VAL Error occurred.
Keep the Execute Bit ON until the Complete or Error Bit turns ON. To send another message, turn
OFF the Execute Bit for at least one scan and then turn it ON again.
Execute
Abort
Dev - Typ
Pro - Typ
Cir - No
Ch - No
MSG-SNDE
Busy
Complete
Error
Param
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