Toho-electronics TRM-006A Manual do Utilizador descarregar pdf (Página 3)

6. MODBUS communications control................................................................................... 20

6.1 Communications procedure

6.2 Message types

6.3 Composition of an RTU request message (transmitted from a high-level

computer to this product)

6.4 Composition of an RTU response message (transmitted from this product

to a high-level computer)

6.5 Description of RTU codes

6.6 Precautions on RTU communications

6.7 Example of CRC-16 calculations

6.8 Composition of an ASCII request message (transmitted from a high-level

computer to this product)

6.9 Composition of ASCII response messages (transmitted from this product

to a high-level computer)

6.10 Description of ASCII codes

6.11 Precautions on ASCII communications

6.12 Example of LRC calculations

7. Specifications..................................................................................................................... 34

7.1 Communications standard category

7.2 Communications specifications

8. Connections ....................................................................................................................... 35

9. Table of identifiers (codes) ................................................................................................36

10. Table of ASCII codes.........................................................................................................39

1 2 3 4 5 6 7 8 ... 39 40

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Toho-electronics TRM-006A Manual do Utilizador Página 3