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Configuration and Use Manual 225
Diagnostics and Troubleshooting
Diagnostics and Troubleshooting Specifications – Model 3350/3700Specifications – Model 3300/3500Measurement Performance
3. Poll to make a connection to the core processor.
4. When the core processor is found, click
ProLink > Configuration > Device and set the
Modbus address to
1.
5. Click
Apply.
6. Disconnect ProLink II.
7. Reconnect the RS-485 wiring between the Series 3000 device and the core processor.
To avoid this problem, always power down the transmitter before removing the connector wiring
bracket.
Note: Do not confuse the Modbus address of the core processor with the Modbus address of the
transmitter. The Modbus address of the core processor is accessible only when you connect directly to
the core processor.
22.10 I/O problems
If you are experiencing problems with I/O, use Table 22-9 to identify an appropriate remedy.
Table 22-9 I/O problems and remedies
Symptom Possible cause Possible remedy
No mA output and
no frequency output or loop
test failed
Power supply problem Check power supply and power-supply wiring.
See Section 22.11.
Fault condition present if fault
indicators are set to downscale or
internal zero
Check the fault indicator settings to verify
whether or not the transmitter is in a fault
condition. See Section 8.4.2 to check the mA
fault indicator or Section 8.5 to check the
frequency fault indicator.
If a fault condition is present, see Section 22.7.
mA output < 4 mA Process condition below value
configured for 4 mA
Verify process.
Verify or change the 4 mA value. See
Section 8.4.4.
Fault condition if fault indicator is set to
internal zero
Check the fault indicator settings to verify
whether or not the transmitter is in a fault
condition. See Section 8.4.2.
If a fault condition is present, check the active
alarm log. See Section 22.6.
Open in wiring Verify all connections.
Bad mA receiving device Check the mA receiving device or try another
mA receiving device. See Section 22.11.6.
Bad output circuit Measure DC voltage across output to verify that
output is active.
Test output. See Section 16.4.4.