Technical data

Troubleshooting communications and connectivity errors (continued)Table C-1:
Communications and connectivity errors and recommended actions
A4. The PC may receive its IP address from an external DHCP server; in this case, one and only
one meter must have its DHCP server enabled. This DHCP server will serve up to 10 IP ad-
dresses to PCs attempting to talk to all meters on the hub. Before connecting multiple me-
ters via Ethernet on a hub, each meter must be configured with a unique user-specified IP
address. Assign each meter on the hub a unique IP address within the range
192.168.135.150 through 192.168.135.254. The Gateway address for each meter may be
left unconfigured as 0.0.0.0. Once a meter's IP address is configured, the meter may be con-
nected to the hub and accessed using that IP address.
Mechanical and electrical troubleshooting
This section is meant to assist site maintenance and operations personnel trained in the
operation of the ultrasonic flow meter and knowledgeable in basic mechanical and
electronic/electrical troubleshooting techniques, using lap top computers as well as digital
volt/ohm meters. Great care should be taken not to “short out” a given electronic/
electrical circuit when Troubleshooting.
Troubleshooting issues and recommended actionsTable C-2:
Issue Recommended actions
No power to the unit Check for correct voltage (AC or DC) to the input of the Field
Connection Board. Check the main power source for blown
fuse or tripped circuit breaker. Reference your "as built" instal-
lation drawings for your location. Check the fuses on the Field
Connection Board. Reference fuse F1 and F2 locations.
Cannot communicate with Daniel
MeterLink program
Ensure that the meter is properly powered. Ensure that the
computer cable is properly connected to the field connection
board and check your interface pins (RS-485 or RS-232). Verify
that the communication parameters of the Daniel MeterLink
program are set according to jumpers on the meter CPU
board.
One or more of the chords is not
indicating a reading (reporting
zeros)
Check for loose connections at the cable connectors. Check
the resistance of the transducers (should be approximately 1-2
W ). Problem also may be caused by a bad Acquisition board or
interconnect cable. Check system status in Daniel MeterLink,
Meter|Monitor for any flagged errors. Check the CPU board
LEDs.
Waveform contains an excessive
amount of noise
Increase the StackSize until noise level decreases (settings can
be 1 (none), 2, 4, 8, or 16). If increasing the StackSize is not
successful, try turning on the filter or consult with Daniel Cus-
tomer Service if you are unsure of how stacking a signal can ef-
fect the meter's operation. Refer to Technical Support under
the Help menu of Daniel MeterLink for contact information.
Troubleshooting communications mechanical and electrical issues
Operations 119