Instruction manual

Using Modbus
®
Protocol with Micro Motion
®
Transmitters 245
Troubleshooting continued
Configuration Record Index
Output and Transmitter
Testing
Troubleshooting
Modbus Mapping
Assignments
Message Framing
Reference
Transmitter not configured If a master reset is performed on the transmitter, diagnostic codes that
are listed in
Table 23-12 indicate the flowmeter requires complete
reconfiguration. A master reset returns all transmitter register values to
pre-characterization manufacturer’s defaults.
Contact Micro Motion customer support before performing a master
reset
.
Data loss possible If a power fluctuation occurs during configuration of MVDSolo or a
Series 1000 or 2000 transmitter, bit #13 in input register 30421 switches
ON to indicate the last configuration parameters might not have been
saved. See
Table 23-13.
Transmitter configuration
changed
Status bits that are listed in Table 23-14 indicate a Modbus or HART
®
device has been used to change the transmitter configuration.
Table 23-12. Transmitter not configured status bits
Address Address type Bit status Condition Corrective action(s)
30001 Input register xxxx xxxx x1xx xxxx • Master reset has
been performed
• Transmitter is not
configured
Reconfigure flowmeter (see Chapter 7
through Chapter 19)
30125 Input register x1xx xxxx xxxx xxxx
30420 Input register x1xx xxxx xxxx xxxx
30422 Input register xxxx xx1x xxxx xxxx
20245
20246
Floating point
register pair
64
Table 23-13. Data loss possible status bits
Address Address type Bit status Condition Corrective action(s)
30126 Input register xx1x xxxx xxxx xxxx Power fluctuation
occurred during
configuration
• Check the last configuration variables
that were written (if necessary, see
Chapter 7 through Chapter 19)
• Rewrite any incorrect variables
30421 Input register xx1x xxxx xxxx xxxx
Table 23-14. Transmitter configuration changed status bit
Address Address type Bit status Condition Corrective action(s)
30001 Input register xxxx xxxx xxxx xx1x Tra n sm i tt er
configuration was
changed using
Modbus or HART
protocol
• Read configuration
• If desired, reconfigure transmitter (see
Chapter 7 through Chapter 19)
• Clear bits by writing any value to input
register 30001, register pair
20245-20246, or discrete input 10035. All
addresses are cleared together.
20245
20246
Floating point
register pair
1048576
10035 Discrete input ON