Yaskawa MP2300S Basic Module Manuel d'utilisateur Page 403

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Appendix G MSG-SND/MSG-RCV Functions (Ethernet)
G.1 Message Transmit Function (MSG-SND)
A-81
Appendices
( 6 ) Data Size (PARAM06)
Set the data size (number of bits or words) for the write request.
Be sure that the last data address determined based on the offset, data address, and data size does not go beyond the
scope of the data addresses.
The valid range of data sizes may differ according to the communication device.
* 1. Specify the number of words
* 2. Specify the number of bytes
Note: The data size in the table is represented in decimal numbers.
( 7 ) Register Offset (PARAM11)
Specify the offset address of write data source in 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.
Example: When specifying 1000 words of offset for the register address:
PARAM11=1000
( 8 ) 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 this to “0” by the user program. After that, the register
is used by system, so do not change the value with the user program.
( 9 ) Reserved by System 2 (PARAM13-PARAM16)
Used by system. Do not change the value with the user program, etc.
Table G.18 Valid Range of Data Sizes (non-procedure)
Non-procedural
Type
Targ et Dat a
Type
Function
Valid Range of Data Sizes
Ethernet (218IF) Ethernet (218IFA)
Non-procedure 1
W
Transmits data in words
*1
1 to 510
1 to 2046 (BIN)
1 to 1023 (ASCII)
Non-procedure 2
B
Transmits data in bytes
*2
1 to 1020
1 to 4092 (BIN)
1 to 2046 (ASCII)
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