Emerson 3412 User Manual
Daniel 3410 Series Ultrasonic Gas Flow Meter Installation Manual
Section 3: Electrical installation
3-9000-759 Rev D
June 2014
CPU Module labeling and LED indicators
55
Modbus TCP
If the meter firmware supports Modbus TCP slave functionality, the following controls will be
available.
available.
Modbus TCP unit identifier: Enter the Modbus TCP unit identifier here. Valid values are 0-255.
Enable alternate Modbus TCP port: The standard TCP port for Modbus TCP is port 502. This port
is always enabled in a meter that supports Modbus TCP. By selecting this option, you can also
enable Modbus TCP communications on a secondary TCP port specified by Alternate Modbus
TCP port.
is always enabled in a meter that supports Modbus TCP. By selecting this option, you can also
enable Modbus TCP communications on a secondary TCP port specified by Alternate Modbus
TCP port.
Alternate Modbus TCP port:
Enter the alternate TCP port number here after selecting Enable alternate modbus TCP port.
Valid port numbers are from 1 to 65535. The meter will not allow some port numbers that are
either used by the meter or are defined port numbers for other protocols. Daniel MeterLink™
will prompt you if it was not able to write the specified port number to the meter.
Valid port numbers are from 1 to 65535. The meter will not allow some port numbers that are
either used by the meter or are defined port numbers for other protocols. Daniel MeterLink™
will prompt you if it was not able to write the specified port number to the meter.