Section 8: Description Of Input And Output Data; Position Assignment For The Input Data (Data From Master To Slave); Set Point - Emerson Bettis RTS Installation, Operation And Maintenance Manual

Section 8: Input and Output Data
September 2023
Section 8: Description of Input and
General information: Depending on the master, it is possible that the low byte (bits 0
to 7) and the high byte (bits 8 to 15) have to be swapped in the registry values. This
swapping can be done by the control unit with parameter P15.5.
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.
8.1 Position Assignment for the Input Data
(Data From Master To Slave)
The position values can be written with functions 6 (06
16 (10
The position values can be read back with function 3 (03
NOTE:
Depending on the master, the position numbers are assigned with an offset. For
example, position 0 in the master has the address 1
8.1.1

Set point

Position number: 0Hex
Data format: 16-bit, the lower 10 bits (0 to 1023) are used.
NOTE:
The other bits are reserved for future use and have to be set to zero.
Table 4.
Value
0 (0 )
Hex
512 (200
1023 (3ff
10
Output Data
: Write multiple positions).
Hex
Structure
)
Hex
)
Hex
Installation, Operation and Maintenance Manual
Hex
or 40001
Dec
Function
0%
50%
100%
FCIM-20054-EN Rev. 0
: Write single position) and
: Read holding position).
Hex
.
Dec
Input and Output Data