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A-40
G.1.3 Message Transmit Function Parameter List (Param) Overview
The param of the MSG-SND function has a parameter list structure composed of 17 words. (The value of the Param
itself is the start address (MA, DA) of the parameter list.)
In the parameter list, enter a connection number, function code and its relevant parameter data. Process results and sta-
tus are also output.
When MEMOBUS or non-procedure is used as a communication protocol, the parameter list is as follows:
Note: Parameter details are explained in the parameter details for each protocol type. Refer to the following
items:
• G.1.4 Function Setting and Parameter Details for MEMOBUS and Extended MEMOBUS Protocols on page
A-41
• G.1.5 Function Setting and Parameter Details for MELSEC Protocol on page A-51
• G.1.6 Function Setting and Parameter Details for MODBUS/TCP Protocol on page A-56
• G.1.7 Function Setting and Parameter Details for Non-procedural Protocol on page A-61
( 1 ) MEMOBUS Parameter List
Note: IN: Input, OUT: Output, SYS: For system use
( 2 ) Non-procedual Parameter List
Note: IN: Input, OUT: Output, SYS: For system use
Param No. IN/OUT Contents Description
00
OUT
Process result Process result is output.
01 OUT
Status The status of the communication device is output.
02
IN
Connection number Specifies the remote destination.
03
IN
Option Sets a unique setting for each communication device.
04
IN
Function code Sets a function code to transmit.
05
IN
Data address Specifies the start address of the data.
06
IN
Data size Sets the data size for a read/write request.
07
IN
Remote CPU number Sets a remote CPU number.
08
IN
Coil offset Sets the coil's offset word address.
09
IN
Input relay offset Sets the offset word address of an input relay.
10
IN
Input register offset Sets the offset word address of an input register.
11
IN
Holding register offset Sets the offset word address of a holding register.
12
SYS
Reserved 1
13 to 16
SYS
Reserved 2
Param No. IN/OUT Contents Description
00
OUT
Process result Process result is output.
01
OUT
Status The status of the communication device is output.
02
IN
Connection number Specifies the remote destination.
03
IN
(unused)
04
IN
(unused)
05
IN
Data address Specifies the start address of the data.
06
IN
Data size Sets the data size for a write request.
07
IN
(unused)
08
IN
(unused)
09
IN
(unused)
10
IN
(unused)
11
IN
Register offset Sets the offset word address of the register.
12
SYS
Reserved 1
13 to 16
SYS
Reserved 2