Fieldbus Troubleshooting Guide - GE PanaFlow XMT1000 User Manual

D.12 Fieldbus Troubleshooting Guide
See Table 11 below for suggested solution to possible Fieldbus problems.
Problem
Communication between DCS and
XMT1000 FF cannot be established
Communication with the XMT1000
FF is frequently cut off.
A value cannot be written to a
parameter in the XMT1000 FF.
The actual mode of a function block
differs from the target mode.
A block's dynamic parameters do not
update.
PanaFlow™ XMT1000 User's Manual
Table 11: XMT1000 FF Troubleshooting Guide
Presumed Cause
Wiring unconnected, broken or
shorted
The power is off or the power supply
voltage is less than 9 V
The address detection range is not
correctly set in the DCS
The fieldbus is experiencing a large
amount of noise.
Missing terminators on the bus,
incorrect terminator placement or
extra terminators.
Not in configuration mode.
You have attempted to write a value
outside the valid range.
The present mode does not allow write
access.
The jumper is in write protected
configuration.
Resource block in OOS.
Schedules that define when function
blocks execute are not set correctly.
The transducer block is not in Auto
mode.
XMT1000 is powered down
XMT1000 does not recognize the FF
PCB
Appendix D. Foundation Fieldbus Communication
Remedy
Correct wiring between XMT1000
and spur device coupler.
Supply proper voltage
Correct address detection range -
default address for XMT1000 is 0x17
Using an oscilloscope or another
fieldbus health monitor to check the
waveform on the fieldbus.
Refer to FOUNDATION Fieldbus
specifications for a full discussion of
terminator requirements.
Enter correct "Admin" password in
Resource block - verify "S1 -
configuration mode" appears on
XMT1000 UI
Check the setting range of parameters.
Change the target mode.
Contact factory for write protect
jumper configuration
Change the target mode of the
Resource Block to Auto.
Set the schedules using a
configuration tool.
Change the target mode of the
transducer block to Auto.
Verify the XMT1000 is powered on
and measuring properly
Check Options menu on XMT1000 UI
for Fieldbus option - if it appears the
meter knows it is present
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