Emerson Bettis RTS Manuale di installazione, funzionamento e manutenzione - Pagina 9
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Installation, Operation and Maintenance Manual
VCIOM-15517-EN Rev. 0
Section 5: Description of Input and
General information: Depending on the master, it is possible that the low byte (bits 0 - 7)
and the high byte (bits 8 - 15) have to be swapped in the registry values. This swapping can
be done by the control unit with parameter P15.4.
The transmission mode (big endian/little endian) always has to be adjusted such that the
analog values are transmitted correctly. Only then can the binary data be swapped.
5.1
Register Assignment for the Input Data
(Data from Master to Slave)
The register values can be written with functions 6 (06
and 16 (10
The register values can be read back with function 3 (03
WARNING
!
Depending on the master, the register numbers are assigned with an offset! For example,
register 0 in the master has the address 1
5.1.1
Set Point
Registry number: 0
Data format: 16-bit, the lower 10 bits (0 - 1023) are used.
The other bits are reserved for future use and must be set to zero!
Structure:
Table 3.
Input and Output Data
Output Data
: Write multiple registers).
Hex
Hex
Value
0 (0
)
Hex
512 (200
)
Hex
1023 (3ff
)
Hex
Section 5: Input and Output Data
: Write single register):
Hex
: Read holding register).
Hex
or 40001
!
Dec
Dec
Function
0%
50%
100%
July 2021
Description
5