Yaskawa MP2300S Basic Module - Manual (Page 393)

Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.1 Message Transmit Function (MSG-SND)
A-71
Appendices
( 9 ) Remote CPU Number (PARAM07)
Refer to G.1.4 Function Setting and Parameter Details for MEMOBUS and Extended MEMOBUS Protocols.
( 10 ) Offset (PARAM08 to PARAM11)
Specify the offset addresses of the read data storage area and the write data source of the transmission side.
The address for the transmission side will be displaced by the number of words designated by the offset.
Note: 1. For more information, refer to G.1.8 Relationship between Data Address, Data Size, and Offset for
MSG-SND Function.
2. The offset cannot be a negative value.
The offset parameter is prepared for each target data type.
The following table provides the offset parameters.
The valid offset parameter may differ according to function code.
The following table provides the valid parameters for each function code.
( 11 ) Reserved by System 1 (PARAM12)
Used by system (the channel number of the communication buffer in use is stored).
Note: At the first scan during power up, make sure to set it to “0” by using the user program. After that, the reg-
ister is used by system. Do not change the value thereafter with the user program.
( 12 ) Reserved by System 2 (PARAM13-PARAM16)
Used by system. Never change this value with the user program, etc.
Table G.10 Offset Parameter List
Parameter Contents Description
PARAM08 Coil offset Sets the coil's offset word address.
PARAM09 Input relay offset Sets the offset word address of an input relay.
PARAM10 Input register offset Sets the offset word address of an input register.
PARAM11 Holding register offset Sets the offset word address of a holding register.
Table G.11 Valid Parameter List for Offset of Each Function Code
Function Code Function
Valid Offset
Parameter
01H Reads coil state PARAM08
02H Reads input relay state PARAM09
03H Reads holding register content PARAM11
04H Reads input register content PARAM10
05H Changes single coil state PARAM08
06H Writes to single holding register PARAM11
09H Reads holding register content (extended) PARAM11
0AH Reads input register content (extended) PARAM10
0BH Writes to holding register (extended) PARAM11
0EH Discontinuously writes to holding register (extended) PARAM11
0FH Changes multiple coil states PARAM08
10H Writes to multiple holding registers PARAM11
31H Write to fixed buffer PARAM11
32H Reads the random access buffer PARAM11
33H Writes to the random access buffer PARAM11