Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.2 Message Receive Function (MSG-RCV)
A-99
( 10 ) Offset (PARAM08 to PARAM11)
Specify an offset address for the reception side data address.
The address for the reception side will be displaced by the number of words designated by the offset.
Note: 1. For more information, refer to G.2.8 Relationship between Data Address, Data Size, and Offset for
MSG-RCV Function.
2. The offset cannot be a negative value.
The offset parameter is prepared for each target data type.
The following table lists the offset parameters.
The valid offset parameter may differ according to the function code.
The following table lists the valid parameters for each function code.
Note: √: Available, –: Not available
Table G.21 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.22 Valid Parameter List for Offset of Each Function Code
Function
Code
Function
Valid Offset
Parameter
Protocol Type
Extended
MEMOBUS
MEMOBUS
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 √
–
0DH
Discontinuously reads 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 √√
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