KMC Controls FlexStat Operation Manual page 15

For MS/TP EIA-485 communications, the Max
Master is the highest MAC address a device will
attempt to locate when polling for master devices on
the local network. To avoid possible communication
issues with the network or a computer connected
through a KMD-5576 USB Communicator, the Max
Master number should be the lowest number
needed for that network.
Max Info Frames is the maximum number of
information frames (data packets) that a controller
may send out before it must pass the token.
For IP and IP Foreign Device communications,
consult with the system administrator for the
appropriate settings for the IP Address, Subnet
Mask, Gateway, and UDP Port.
Ethernet communications are essentially plug-and-
play, and the MAC address is not changeable.
In firmware R2.1.0.7 and later, the Communications
menu has a Status line that indicates the Route Sta-
tus of the active network communications protocol.
See the Route Status chart for possible indicators and
potential troubleshooting action.
Route Status
Status Description
Active The network is
functioning correctly
and capable of
passing traffic.
Down Something is
impeding the traffic in
that network.
Duplicate Another MS/TP
MAC device has the same
MAC address.
Sole The FlexStat is not
Master detecting any other
master device on
the local MS/ TP
networks. (Slave
devices however, may
be present.)
FlexStat
Action
None required.
Probably requires
manual intervention.
Conditions that
cause a network to
be down range from
configuration to
wiring problems.
Change the MST/TP
MAC address in the
device containing the
duplicate number.
Requires corrective
action only if other
master devices
are known to be
connected to the
local MS/TP network.
15
In firmware R2.1.0.7 and later, MS/TP Diagnostics
is at the bottom of the MS/TP menu (when MS/TP is
the active communications port). It consists of a set
of internal MS/TP communication status and error
counters from that FlexStat's perspective. The MS/TP
Diagnostics menu has two selections:
• View Metrics displays a list of internal status
and event counters showing the health of the MS/
TP network. (PFM = Poll For Master.)
• View Masters displays a list of MS/TP master
MAC addresses as seen by this device.
On both screens, pressing the Enter key invokes a
pop-up dialog that allows the user to clear the diag-
nostic data.
Operation Guide, Rev. R