Network Protocol Reference; Transmission Procedure - Hitachi WJ200 Series Instruction Manual
Wj200 series single-phase input 200v class three-phase input 200v class three-phase input 400v class
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Also See for WJ200 Series:
- Quick reference manual (131 pages) ,
- Instruction manual (30 pages) ,
- Installation manual (20 pages)
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Network Protocol Reference
Transmission procedure
The transmission between the external control equipment and the inverter takes the
procedure below.
• Query - A frame sent from the external control equipment to the inverter
• Response - A frame returned from inverter to the external control equipment
The inverter returns the response only after the inverter receives a query from the
external control equipment and does not output the response positively. Each frame is
formatted (with commands) as follows:
Frame Format
Header (silent interval)
Slave address
Function code
Data
Error check
Trailer (silent interval)
B−5
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Troubleshooting
