Johnson Controls MS-FIT100-0 User Manual page 37

Table 9: FIT Display Table
Menu Fit Display Short Meaning
Issues Badframe
Issues ChrFrame
Issues 2ndTkn
Issues Offline
Issues EOL>2
Monitor Monitor
Monitor Monitor
Bus
Monitor Offline
Monitor Dev
Monitor Adr
Monitor BitVolts
Monitor TxTkn
Monitor DevId
MS-FIT100-0 Field Inspection Tool User Guide
Expert
Mode
Bad Data
Received
Character
Framing Error
Token Re-
transmitted.
Device went
offline.
>2 EOL Switches
are On
Monitor Traffic
on Bus
Listen to bus
communications
There is no
token passing
Quantity of
Addresses
Found
Address of
current device
Bit Volts
Reading at
Address
Tokens Sent by
Address
Device ID at X
Address
Description
Bad Data Received. Bad MS/TP frame. Invalid
MS/TP header CRC or data CRC.
Characters are transmitted in frames. If a
frame is too long or short, a framing error
occurs.
A device handed off the token, but no
transmission seen. the TKN is re-transmitted.
This device was online, received a PFM, and
did not reply to it.
More than two devices with EOL switch ON.
Note: This is all EOL switches on ALL bus
segments for connected bus.
Main Menu item Monitor Bus. Selecting
Monitor puts the FIT in a listen-only mode.
Used to listen to bus traffic and report bus
statistics.
The FIT is listening to the Bus, but no token is
passing. The bus is in an idle state.
Qty of Addresses discovered by the FIT
Address reported by the controller
Communication Voltage reported by the
selected Address.
Displays the number of Token Frames the
device transmits. In MS/TP, each master
device passes a logical token to the next
device during normal operation. Only the
master device currently holding the token
is allowed to initiate a message, thus the
number of Token Frames sent or received
should be large. Normally, the number of
Token Frames received should be almost
the same as the number of Token Frames
transmitted.
Device ID when an I-Am is seen in a capture
(trigger with Who-Is) or -1 if not seen.
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