Rockwell Automation 20-COMM-S RS-485 DF1 Adapter - Manual (Page 40)

5-8 Troubleshooting
Events
Many events in the Event queue occur under normal operation. If you
encounter unexpected communications problems, the events may help
you or Allen-Bradley personnel may troubleshoot the problem. The
following events may appear in the event queue:
Code Event Description
1 No Event Empty event queue entry.
2 DPI Bus Off Flt A bus-off condition was detected on DPI. This event may be
caused by loose or broken cables or by noise.
3 Ping Time Flt A ping message was not received on DPI within the specified
time.
4 Port ID Flt The adapter is not connected to a correct port on a DPI
product.
5 Port Change
Flt The DPI port changed.
6 Host Sent
Reset The DPI product issued this because it was reset.
7 EEPROM Sum
Flt The EEPROM in the adapter is corrupt.
8 Online @
125 kbps The adapter and DPI product are communicating at 125 kbps.
9 Online @
500 kbps The adapter and DPI product are communicating at 500 kbps.
10 Bad Host Flt The adapter was connected to an incompatible product.
11 Dup. Port Flt Another peripheral with the same port number is already in
use.
12 Type 0 Login The adapter has logged in for type 0 control.
13 Type 0 Time
Flt The adapter has not received a type 0 status message within
the specified time.
14 DL Login The adapter has logged into a Datalink.
15 DL Reject Flt The Host rejected an attempt to log in to a Datalink because
the Datalink is not supported or is used by another peripheral.
16 DL Time Flt The adapter has not received a Datalink message within the
specified time.
17 Control
Disabled The adapter has sent a “Soft Control Disable” command to the
DPI product.
18 Control
Enabled The adapter has sent a “Soft Control Enable” command to the
DPI product.
19 PCCC IO Time
Flt The adapter has not received a PCCC control message within
the specified time-out interval.
20 Normal
Startup The adapter successfully started up.
21 Message
Timeout A Client-Server message sent by the peripheral was not
completed.