Modbus Commands; Modbus Addressing Model; Modbus Communication - Siemens SITRANS F Coriolis FCT030 Function Manual

MODBUS commands

4.1

Modbus addressing model

The device allows read/write access to one holding register block. All devices are mapped to
this Modbus address space.
4.2

Modbus communication

Table 4-1 General Modbus settings
Modbus Data type /
register Size in
bytes
8291 Unsigned /
2
8005 Unsigned /
2
8297 Unsigned /
2
FCT030 Modbus (From firmware 4.0)
Function Manual, 06/2018, A5E39931813-AB
Parameter Description
Restart com‐ Restarts the communication using
munication configured slave address, baud rate
and parity/framing.
Slave address DIP switch setting on the transmitter
(HW) cassette. Address is used if DIP
switch is set to a value > 0.
Slave address Software address of Modbus inter‐
(SW) face. Address is used if switch is set
to 0.
Default val‐ Value range /
ue Setting options
[units]
(units
register)
-
● 0: Cancel
● 1: Restart
- -
1 1 - 147
4
Access
level
Write only
Read only
Read /
write
33