TOHO ELECTRONICS TTX-700 User Manual
Page 2
Contents
1.
Before using the product ......................................................................................................................... 4
1.1
On this operation manual ............................................................................................................. 4
1.2
What can be done with communications ...................................................................................... 4
1.3
Positioning communications (priority ranking)............................................................................ 4
1.4
Setting before communications .................................................................................................... 4
2.
Settings regarding TOHO communications ............................................................................................ 5
2.1
Overview ...................................................................................................................................... 5
2.2
Setting a data length ..................................................................................................................... 6
2.3
Setting a stop bit length................................................................................................................ 6
2.4
Setting a parity ............................................................................................................................. 6
2.5
Setting whether to conduct a BCC check ..................................................................................... 6
2.6
Setting a communications speed .................................................................................................. 6
2.7
Setting an address......................................................................................................................... 7
2.8
Setting a response delay ............................................................................................................... 7
2.9
Switching communications mode ................................................................................................ 7
3.
TOHO communications control .............................................................................................................. 8
3.1
Communications procedure.......................................................................................................... 8
3.2
Message types .............................................................................................................................. 8
3.3
Composition of a request message
(transmitted from a high-level computer to this product)............................................................. 9
3.4
Composition of a response message
(transmitted from this product to a high-level computer)........................................................... 10
3.5
Description of codes....................................................................................................................11
3.6
Communications precautions ..................................................................................................... 13
4.
Examples of TOHO communications ................................................................................................... 15
4.1
Examples of communications to be read.................................................................................... 15
4.2
Examples of communications to be written ............................................................................... 15
5.
Settings regarding MODBUS communications .................................................................................... 17
5.1
Overview .................................................................................................................................... 17
5.2
Setting a data length ................................................................................................................... 18
5.3
Setting a stop bit length.............................................................................................................. 18
5.4
Setting a parity ........................................................................................................................... 18
5.5
Setting a communications speed ................................................................................................ 18
5.6
Setting an address....................................................................................................................... 19
5.7
Setting a response delay ............................................................................................................. 19
5.8
Switching communications mode .............................................................................................. 19
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