Danfoss VLT Micro Drive FC 51 Series, Руководство по эксплуатации, Страница: 35 / 73

Response
The normal response is an echo of the query, returned after the register contents have been passed.
Field Name Example (HEX)
Slave address 01
Function 06
Starting Address HI 00
Starting Address LO 1D
No. of Points HI 00
No. of Points LO 01
Error Check (CRC) -
Table 5.1: Normal response frame
5.5.6 Preset Multiple Registers (10
HEX
)
Description
This function presets a value into a sequence of holding registers.
Query
The query message specifies the register references to be preset. Register addresses start at zero, i.e. register 1 is addressed as 0.
Example Write 65535 (655.35s) to PNU734 (4-bytes) mapped to 0 x 1CAB
Field Name Example (HEX)
Slave address 01
Function 10
Starting Address HI 1C
Starting Address LO AB
No. of Registers HI 00
No. of Registers LO 02
Byte count 04
Write Data HI (Register 7339) 00
Write Data LO (Register 7339) 00
Write Data HI (Register 7340) FF
Write Data LO (Register 7340) FF
Error Check (CRC) -
Table 5.1: Request frame
Response
The normal response returns the slave address, function code, starting address, and quantity of registers preset.
Field Name Example (HEX)
Slave address 01
Function 10
Starting Address HI 1C
Starting Address LO AB
No. of Registers HI 00
No. of Registers LO 02
Error Check (CRC) -
Table 5.1: Normal response frame
5 Modbus RTU VLT
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Micro Drive FC 51 Operating Instructions
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MG.02.A4.02 - VLT
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