2.4 Communications with MP-series Controllers
Message Functions
2-72
Reserved for System (PARAM19)
This parameter is used by the system.
Local Station Data Address (PARAM20 and PARAM21)
Set the address of the read data destination or write data source in the MP3000-series Controller.
The address is set as the word offset from address 0.
Local Station Register Type (PARAM22)
Set the register type of the read data destination or write data source in the MP3000.
The register types that can be used depend on whether you are reading or writing.
The following table lists the combinations of register types.
* You can store the write data address table in registers in the local station. The data stored in the M, G, I, O, and S regis-
ters in the local station can be read from or written to the remote station by specifying the register type in the write data
address table.
Reserved for System (PARAM23)
This parameter is used by the system.
Do not change the value of PARAM19 from a user program or by any other means.
Register Type Value Type Remarks
0 M Sets the target data type to MB for bits and MW for words.
1 G Sets the target data type to GB for bits and GW for words.
2 I Sets the target data type to IB for bits and IW for words.
3 O Sets the target data type to OB for bits and OW for words.
4 S Sets the target data type to SB for bits and SW for words.
5 or higher − Not used for the Extended MEMOBUS protocol.
Function Code Applicable Register Types
01, 02, 03, 04, 09, or 0A hex M, G, or O
05, 06, 0B, 0F, or 10 hex M, G, I, O, or S
0D hex M
0E hex M
4341 or 4349 hex M, G, or O
4345, 4346, 434B, or 434F hex M, G, I, O, or S
434D hex M or G
434E hex
∗
M or G
No-protocol Communications
(No function code)
M, G, I, O, or S
Do not change the value of PARAM23 from a user program or by any other means.
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