Communication Issues; Ethernet/Ip Network Communication Issues; Kmd-5576 (Data Port) Communication Issues; Ms/Tp Network Communication Issues - KMC Controls FlexStat series Operation Manual

Communication Issues

NOTE: For a "COMM ERROR" on the display, see
(Advanced) CO2 Sensor (and DCV) on page

Ethernet/IP Network Communication Issues

• Check communication settings—see (Advanced)

Communications (BACnet) on page

KMD-5576 (Data Port) Communication Issues

• For Ethernet-enabled models, a FlexStat in one of
the Ethernet or IP modes must (temporarily) be
set for MS/TP mode (and restarted) to commu-
nicate through the data port at the bottom of the
cover. See (Advanced) Communications (BACnet)
on page 16 and Resetting the FlexStat on page
• Upgrade to the latest version of BACstage (ver.
2.4.0.25 or later required).
• Check the settings for the USB port on the
computer (Device Manager > Ports) and the
MS/TP port in BACstage (Access > Connection
Parameters).
• Reduce the Max Master number down to the
minimum needed for that network—see (Ad-
vanced) Communications (BACnet) on page
• Install latest driver and check latency settings.
See Latency Settings for KMD-5576 Service Bul-
letin (SB0308A) on the KMC web site.
• See also MS/TP Network Communication
below.

MS/TP Network Communication Issues

NOTE: In firmware R2.0.0.6 and later, Configure
must first be selected before any values
can be changed.
• Check MAC address and device instance num-
bers (especially for duplicate numbers on the
network)—see (Advanced) Communications
(BACnet) on page 16 and (Advanced) BACnet
Device Properties on page
• Check that EOL switches are fully latched in the
correct positions (see the relevant FlexStat Instal-
lation Guide).
• Check baud rate—see (Advanced) Communica-
tions (BACnet) on page
• Reduce the Max Master number down to the
minimum needed for that network—see (Ad-
vanced) Communications (BACnet) on page
• See Wiring Issues on page
FlexStat
16
16.
Issues
17.
16.
16.
39.

Cover, Display, and Reset Issues

Cover Binds on Backplate

11.
• To remove the cover, turn the hex screws in the
bottom and top of the FlexStat CLOCKWISE
only until they clear the cover. Pull the cover
away from the backplate (mounting base).
CAUTION
To prevent mounting screws from causing damage
to the case or circuit board, DO NOT TURN THE
SCREWS IN FARTHER THAN NECESSARY to remove
the cover. Using a power screwdriver on these
screws is not recommended. Also, use only the
mounting screws supplied by KMC Controls since
26.
other types of screws may damage the FlexStat.
• Carefully remove the FlexStat cover from the
backplate and inspect for bent pins and/or termi-
nal socket connectors. If cover pins are bent, use
a needle-nose pliers to straighten them. If socket
connectors are bent, use a pointed object (such
as a thumbtack or straightened paperclip) to
straighten them. (Pushing the pointed object into
the socket from the back side can be helpful.)
• Replace the backplate.
NOTE: When installing the cover on the
backplate, be sure to not pinch or dislodge
any wiring. Do not use excessive force.
If there is any binding, pull out cover
and examine pins and terminal socket
connectors.
31 Operation Guide, Rev. M