Operation Liquiline CM44P
72 Endress+Hauser
Menu/Setup/General settings/Extended setup/Modbus
Function Options Info
Settings
Transmission Mode Selection
• TCP
• RTU
• ASCII
Factory setting
(Modbus-RS485 only)
RTU
The transmission mode is displayed depending
on the version ordered.
In the case of RS485 transmission, you can
choose between RTU and ASCII . There are no
choices for Modbus-TCP.
Baudrate
Modbus-RS485 only
Selection
• 1200
• 2400
• 4800
• 9600
• 19200
• 38400
• 57600
• 115200
Factory setting
19200
Parity
Modbus-RS485 only
Selection
• Even (1 Stopbit)
• Odd (1 Stopbit)
• None (2 Stopbit)
Factory setting
Even (1 Stopbit)
Byte order Selection
• 1-0-3-2
• 0-1-2-3
• 2-3-0-1
• 3-2-1-0
Factory setting
1-0-3-2
Watchdog 0 to 999 s
Factory setting
5 s
If no data transmission takes place for longer
than the time set, this is an indicator that
communication has been interrupted. After this
time, input values received via the Modbus are
considered to be invalid.
Web server
Menu/Setup/General settings/Extended setup/Webserver
Function Options Info
Webserver Selection
• Off
• On
Factory setting
On
You can switch off communication at this point.
The software can then only be accessed via local
operation.
Webserver TCP Port 80 Read only The Transmission Control Protocol (TCP) is an
arrangement (protocol) as to how data should be
exchanged between computers. A port is a part
of an address which assigns data segments to a
network protocol.
Webserver login Selection
• Off
• On
Factory setting
On
You can switch user administration on and off at
this point. This makes it possible to create
multiple users with password access.
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