Design Guide | VLT® AutomationDrive FC 360
Table 56: Query
Field name Example (hex)
Follower address 01
Function 03 (Read holding registers)
Starting address HI 0B (Register address 3029)
Starting address LO D5 (Register address 3029)
Number of points HI 00
Number of points LO 02 – (parameter 3-03 Maximum Reference is 32 bits long, that is,
2 registers)
Error check (CRC) –
Response
The register data in the response telegram is packed as 2 bytes per register, with the binary contents right justified within each byte. For
each register, the 1st byte contains the high-order bits, and the 2nd contains the low-order bits.
Example: hex 000088B8 = 35.000 = 35 Hz.
Table 57: Response
Field name Example (hex)
Follower address 01
Function 03
Byte count 04
Data HI (register 3030) 00
Data LO (register 3030) 16
Data HI (register 3031) E3
Data LO (register 3031) 60
Error check (CRC) –
9.10.6 Preset Single Register (06 hex)
Description
This function presets a value into a single holding register.
Query
The query telegram specifies the register reference to be preset. Register addresses start at 0, that is, register 1 is addressed as 0.
Example: Write to parameter 1-00 Configuration Mode, register 1000.
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