Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.1 Message Transmit Function (MSG-SND)
A-84
Example: When reading coil state with offset:
The various setting values and their relationships with the data of the remote device are as follows, when transmitting
“reading coil state” with offset in MEMOBUS protocol:
• Description of the MSG-SND function in ladder program
• Parameter list setting of the MSG-SND function
Note: IN: Input, OUT: Output, SYS: For system use
Table G.19 Parameter List Setting
Register Num-
ber
Setting
Value
Parameter Num-
ber
IN/OUT Remarks
DW00000
– PARAM00 OUT
Process result
DW00001
– PARAM01 OUT
Status
DW00002
00001 PARAM02 IN
Connection number=1
DW00003
–PARAM03IN
Option (setting unnecessary)
DW00004
00001 PARAM04 IN
Function code=1 (reads coil state)
DW00005
08192 PARAM05 IN
Data address=8192 bits (512 words)
DW00006
00100 PARAM06 IN
Data size=100
DW00007
00001 PARAM07 IN
Remote CPU number=1
DW00008
01000 PARAM08 IN
Coil offset=1000 words
DW00009
00000 PARAM09 IN
Input relay offset=0 word
DW00010
00000 PARAM10 IN
Input register offset=0 word
DW00011
00000 PARAM11 IN
Holding register offset=0 word
DW00012
–PARAM12SYS
Reserved (zero clear at startup)
DW00013
–PARAM13SYS
Reserved
DW00014
–PARAM14SYS
Reserved
DW00015
–PARAM15SYS
Reserved
DW00016
–PARAM16SYS
Reserved
Execute
Communication device = 218IFA
Protocol = MEMOBUS
Circuit number = 1
Communication buffer channel number = 1
Parameter list start address
(use DW00000 to DW00016)
Abort
Dev-Typ
Pro-Typ
Cir-No
Ch-No
Param
MSG-SND
Busy
Complete
Error
DB000201
DB000202
00016
00001
00001
DA00000
00001
DB000210
DB000211
DB000212
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