Siemens SITRANS FC410, Руководство по эксплуатации, Страница: 134 / 160

Modbus holding registers
A.3 Modbus holding registers tables
FC410 with Modbus
132
Operating Instructions, 02/2016, A5E33120874-AC
A.3.6 Communication
Table A- 13 Modbus
Modbus
address
Data type /
Size [bytes]
Parameter Description Default value
[unit]
Value range Access
level
527 Unsigned /
2
Float byte order The float byte order used in
Modbus messages.
Selection 0: Byte order:
1-0-3-2
Selection 1: Byte order:
0-1-2-3
Selection 2: Byte order:
2-3-0-1
Selection 3: Byte order:
3-2-1-0
The first mentioned byte is
the first byte sent.
Byte 3 corresponds to the
left-most byte (MSB) of a 32
bit float in big endian format;
byte 0 corresponds to the
right-most byte (LSB).
3 0 to 3 Read /
Write
528 Unsigned /
2
Modbus Address Set Modbus Device
Address
1 1 to 247 Read /
Write
529 Unsigned /
2
Baudrate Set communication
baudrate.
Following baud rates are
available:
• 0 = 9 600
•
1 = 19 200 (Default)
• 2 = 38 400
•
3 = 57 600
• 4 = 76 800
•
5 = 115 200
1 0 to 5 Read /
Write