7.10.6 Preset Multiple Registers (10 HEX)
Description
This function presets values 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 of a request
to preset two registers (set parameter 1-05 = 738 (7.38 A)):
Field Name
Example (HEX)
Slave Address
01
Function
10
Starting Address HI
04
Starting Address LO
19
No. of Registers HI
00
No. of registers LO
02
Byte Count
04
Write Data HI
(Register 4: 1049)
00
Write Data LO
(Register 4: 1049)
00
Write Data HI
(Register 4: 1050)
02
Write Data LO
(Register 4: 1050)
E2
Error Check (CRC)
-
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
04
Starting Address LO
19
No. of Registers HI
00
No. of registers LO
02
Error Check (CRC)
-
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HVAC Drive Design Guide
7 RS-485 Installation and Set-up
MG.11.B9.02 - VLT
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