Proline Cubemass 300 Modbus RS485
Description of device parameters
Hauser
163
achieved by changing the byte sequence, the settings for the byte sequence of the host
system must be adapted accordingly.
Byte transmission sequence
Byte addressing, i.e. the transmission sequence of the bytes, is not specified in the Modbus
specification. For this reason, it is important to coordinate or match the addressing
method between the master and slave during commissioning. This can be configured in
the measuring device using the
Byte order
parameter (→ 162).
The bytes are transmitted depending on the selection in the
Byte order
parameter
FLOAT
Sequence
Options
1.
2.
3.
4.
1 – 0 – 3 – 2 *
Byte 1
(MMMMMMMM)
Byte 0
(MMMMMMMM)
Byte 3
(SEEEEEEE)
Byte 2
(EMMMMMMM)
0 – 1 – 2 – 3
Byte 0
(MMMMMMMM)
Byte 1
(MMMMMMMM)
Byte 2
(EMMMMMMM)
Byte 3
(SEEEEEEE)
2 – 3 – 0 – 1
Byte 2
(EMMMMMMM)
Byte 3
(SEEEEEEE)
Byte 0
(MMMMMMM)
Byte 1
(MMMMMMM)
3 – 2 – 1 – 0
Byte 3
(SEEEEEEE)
Byte 2
(EMMMMMMM)
Byte 1
(MMMMMMMM)
Byte 0
(MMMMMMMM)
* = factory setting, S = sign, E = exponent, M = mantissa
INTEGER
Sequence
Options
1.
2.
1
–
0
– 3 – 2 *
3 – 2 –
1
–
0
Byte 1
(MSB)
Byte 0
(LSB)
0
–
1
– 2 – 3
2 – 3 –
0
–
1
Byte 0
(LSB)
Byte 1
(MSB)
* = factory setting, MSB = most significant byte, LSB = least significant byte
STRING
Presentation taking the example of a device parameter with a data length of 18 bytes.
Sequence
Options
1.
2.
...
17.
18.
1
–
0
– 3 – 2 *
3 – 2 –
1
–
0
Byte 17
(MSB)
Byte 16
...
Byte 1
Byte 0
(LSB)
0
–
1
– 2 – 3
2 – 3 –
0
–
1
Byte 16
Byte 17
(MSB)
...
Byte 0
(LSB)
Byte 1
* = factory setting, MSB = most significant byte, LSB = least significant byte
Содержание Proline Cubemass 300
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