Troubleshoot Maintenance Log Files And Trend Files - Emerson Rosemount 3812 Maintenance And Troubleshooting Manual

Maintenance and Troubleshooting Manual
00809-0100-3812
on the PC at a time. Refer to the MeterLink Quick Start Manual (00809-0100-7630) for
phone and modem details. The manual may also be downloaded from the Emerson
website.
Emersonprocess.com/en-US/brands/Flow/ultrasonics/Pages/Ultrasonic.aspx
2.2.3 Unable to connect to meter
If you receive the error message "Unable to connect to meter" when trying to connect to a
Rosemount Liquid Ultrasonic Flow Meter, refer to the following:
• Ethernet Connections
• Direct Serial Connections
2.2.4 Ethernet connections
If you received the error message "Unable to connect to meter" while trying to connect
over Ethernet, verify you have the correct IP address in the Meter Directory record. If the
meter is to assign the IP address, make sure the IP address is set to 192.168.135.100 and
that the DHCP switch is ON position on the CPU Module. If the meter has a fixed IP
address, verify the IP address, Subnet, and Gateway are correct in the meter. Verify your
wiring to make sure you have a cross-over cable for a direct connection between the meter
and the computer. If going through a hub, verify that the computer and meter are
connected to the hub with straight-through patch cables.
2.2.5 Direct serial connections
Verify the switch settings on the CPU Module. Also verify your wiring between the meter
and the computer running MeterLink using the Field Wiring drawing DMC-004946. Verify
the Comms Address and Baud rate are correct in the Meter Directory record. If unsure of
the port settings for Port A on the CPU module, you can change the PORT A switch on the
CPU module from OFF to ON and the port will be forced to RS-232, 19200 baud rate,
Modbus ID=32 for two minutes.
For additional information on wiring and configuring the meter for the various
communication options, refer to the Installation manual (00825-0100-3812).
2.3 Troubleshoot Maintenance log files and trend
files
2.3.1 Files do not appear in workbook
Maintenance Log files and Trend files that exist on the PC do not appear in the Microsoft
®
Excel
This is most likely caused by the fact that the desired file or files are already open in
Microsoft
Rosemount 3812 Liquid Ultrasonic Flow Meter
(Ethernet
(Direct serial
workbooks tree under Trend Maintenance Logs.
® ®
Excel . Open files can not be verified as Maintenance Log files or Trend Files by
connections)
connections)
Troubleshooting
April 2022
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