Unable To Connect Direct Serial Or External Serial Modem; Unable To Connect To Meter - Emerson Daniel 3812 Maintenance And Troubleshooting Manual

Section 2: Troubleshooting
June 2011
Meter Components
Security seals
External ground wiring
Conduit seals
Flanges
2.2.2

Unable to connect direct serial or external serial modem

If you are using Windows® XP, Windows® Vista or Windows® 7 make sure that you do not have
more than one modem driver installed to the same COM port. Typically this will only be
necessary if you use one COM port to talk direct (serial communications) and use the same COM
port to connect to an external modem. This is an apparent limitation in Microsoft's® Dial-up
Networking. If more than one modem driver is installed for a particular COM port, Dial-up
Networking will always use the last driver installed regardless of what is selected. The only work
around is to only install one modem driver per COM port on the PC at a time. Refer to the Daniel
MeterLink Quick Start Manual (P/N 3-9000-763) for phone and modem details. The manual may
also be downloaded from the Daniel website.
http://www2.emersonprocess.com/en-US/brands/daniel/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
Daniel Liquid Ultrasonic Flow Meter, refer to the following:
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24
Visual Inspection
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Endcap seals
•
Endcaps latches
•
Transmitter Electronics Enclosure
•
Base Enclosure
•
Shroud seals
•
Transmitter Electronics Enclosure
ground lug
•
Transmitter Electronics Enclosure
•
Inspect for leaks
Ethernet Connections (
Section 2.2.4
Direct Serial Connections (
Maintenance and Troubleshooting Manual
Action(s)
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•
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)
)
Section 2.2.5
Unable to connect direct serial or external serial modem
3-9000-767 Rev A
Only authorized personnel may
remove security seals. Follow your
standard operating procedure to
report seals that have been tampered
with or removed and replace the seals
per instructions in Section 3.6.8 in the
Installation Manual (3-9000-765).
Inspect ground lug wiring and make
sure the wiring is tightly secured.
Inspect the conduit sealant and follow
your standard operating procedure to
report tampering with the conduit
sealant.
Your operating procedures may
require a certified electrician and
company witness to reseal the
conduit.
Perform leak tests on flanges