4 parameter list for msg-snd function – Yaskawa JAPMC-CM2304-E User Manual
Page 72
5.2 Message Send Function
5.2.4 Parameter List for MSG-SND Function
5-10
5.2.4 Parameter List for MSG-SND Function
The Param input to the MSG-SND function is a parameter list structure consisting of 17 words. The value of the Param
input is the leading address (MA or DA) of the parameter list.
Use the parameter list to input the connection number, function code, and other related parameters. The processing
results and status are also output to the parameter list.
The following table shows the parameters to be used when MEMOBUS is used as the transmission protocol for Ether-
Net/IP.
IN: Input, OUT: Output, SYS: Used by the system.
Refer to 5.2.5 Details of Parameters Used in Explicit Message on page 5-11 for details on the parameters.
Param No.
IN/OUT
Contents
Description
00
OUT
Processing result
The processing results are output here.
01
OUT
Status
The status of the current MSG-SND function is output here.
02
IN
Remote connection number The connection number of the remote station is set.
03
IN
Option Not
used
04
IN
Function code
For explicit message communication, set 03H.
Usually, function code 03H is used to read the contents of
holding registers. With explicit messages, however, it does
not have that function.
05
IN
Data address
PARAM05 sets the leading address of the M registers used in
explicit message communication within the range of 0 to 65535.
06
IN
Data size
Data size is set within the range of 1 to 504 bytes.
07
IN
Remote CPU number
Not used
08
IN
Coil offset
Not used
09
IN
Input relay offset
Not used
10
IN
Input register offset
Not used
11
IN
Holding register offset
Not used
12 to 16
SYS
Reserved by the system