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4.5
Integer byte order
The device is able to adjust the byte order of integer values.
Table 4-4
Integer byte order
Modbus
register
Data type /
Size in
bytes
Parameter
Description
Default value
[units]
(units register)
Value range /
Setting op‐
tions
Access
level
8295
Unsigned /
2
Integer order byte
The integer byte order used
in Modbus messages.
0: MSB - LSB (big endian)
1: LSB - MSB (little endian)
MSB = most significant byte /
high byte
LSB = least significant byte /
low byte
MSB - LSB
(big endian)
0 - 1
Read /
write
4.6
Float transmission
The Float Byte Order function ensures that the master and slave use the same sequence of
the bytes when transmitting float values. This enables the user to configure the FCT030 and
operate the device with all types of PLCs without reprogramming the PLC. The transmission
order is configured by setting the parameter Byte Order in the submenu Device →
Communication.
Note
The command Restart Communication must be executed to activate the new byte order setting.
The table in chapter Float byte order (Page 39) shows the different options for setting the
transmission method.
MODBUS commands
4.6 Float transmission
FCT030 Modbus (From firmware 4.0)
38
Function Manual, 06/2018, A5E39931813-AB