Johnson Controls MS-FIT100-0 User Manual page 12

Note: To display the rest of the issues, depress the Down Arrow to scroll through the issues.
On any issue being displayed, depressing the Enter Key provides more information specific to
that issue. See Table 2 for a list of possible common issues. See the
information of terminology used and acronyms in the display examples.
Table 2: List of Common Issues and Corrective Action
Display Description
BadFrame Bad MS/TP frame. Invalid MS/
system time
TP header CRC or data CRC.
Bad frames are typically caused
by wiring issues, duplicate
addresses, wrong baud rates
and/or noise.
10
Figure 6: Issue History
Potential Corrective Action
1. Check Idle Bus Voltage.
2. Confirm the correct FIT baud rate is
being used.
3. If repeaters are present, check their
baud rate.
4. Check for duplicate addresses.
5. Break the bus segments down into
smaller segments to isolate, find and
correct the wiring problem.
FIT Display Table
MS-FIT100-0 Field Inspection Tool User Guide
for more