Johnson Controls Metasys Intelligent Fire Network Technical Manual page 55

Table 14: Data Messages Displayed by FN Stats Program
Type of Message
Data Messages Received
Data Messages
Transmitted
Data Messages Missed
Data Transmit Failures
Data Message Retries
Recon Messages Recvd
Resync Messages Sent
Resync Messages
Received
Data Messages Rejected
Port A Fault
Port B Fault
For new installations, or in cases of suspended communication problems,
try exercising the installation by generating FN traffic. Follow the
suggestions below:
• To exercise the Fire-Net NCM to the IFC panel, run Fire Point
summaries with a lot of refreshing or paging of screen.
• To exercise Fire OWS FN communication, disconnect N1 LAN cable
from Fire OWS and run summaries on fire points or zones in the
desired Fire-Net NCMs. Reconnect N1 LAN when done.
If the counters show retries, recons, or resyncs, there is a problem with the
FN segment.
Note: There can be a 10-35-second delay between the cause of a problem
and when it shows up on the counter.
Description
Messages that the Fire OWS and Fire-Net NCM
receive from other network nodes.
Messages the Fire OWS and Fire-Net NCM send to
other network nodes.
Messages that Fire OWS/Fire-Net NCM can't process;
indicates a performance problem caused by the FN
driver software being unable to keep up with the
volume of network messages being received.
Messages that Fire OWS/Fire-Net NCM can't process;
indicates a performance problem caused by the FN
driver software being unable to keep up with the
volume of network messages being sent.
When a node had to resend a message after
communication was unsuccessful; related to either
node or network performance.
Indicates the presence of a new network node coming
online or existing node going.
Number of times the Fire OWS or Fire-Net NCM had to
send out a resync message to other network nodes;
indicator that there is a performance issue with the
node the Fire OWS/Fire-Net NCM is sending to; implies
data loss.
Counts how many resync messages the Fire OWS or
Fire-Net NCM has received from other network nodes;
indicator that there is a performance issue with the
Fire OWS or Fire-Net NCM; implies data loss.
Counts the number of invalid messages, i.e., wrong
sequence number, received at that Fire OWS or
Fire-Net NCM.
On Style 7 wiring configurations, this message
indicates Port A has a fault.
On Style 7 wiring configurations, this message
indicates Port B has a fault.
IFC Networking—Metasys Intelligent Fire Network 55