Network Connection; Bacnet Ms/Tp Network Communication; Pc Data Port Connection - KMC Controls FlexStat Operation Manual

Network Connection

BACnet MS/TP Network Communication

Connect the network wiring and set the EOL switch-
es accordingly. (See the Installation Guide for wiring
and end-of-line switch information.)
From the FlexStat menus, adjust the device instance
number, the MAC address, and baud rate from the
defaults as necessary. Set the Max Master to the
minimum necessary for the network. See (Advanced)
BACnet Device Properties on page 9 and (Advanced)
BACnet Communications on page
NOTE: The current FlexStat MAC address and
device instance numbers can be viewed in
the About menu. Each BACnet device on a
network must have a unique MAC address
and device instance.
EOL On Off
FlexStat
8.)
Off Off EOL On

PC Data Port Connection

The FlexStat is equipped with a PC data port located
at the bottom of the thermostat housing. This port
provides a temporary EIA-485 (formerly RS-485)
connection to the digital network for network setup
or troubleshooting.
To connect a computer to the port, a means of
converting the EIA-485 signal to a USB or EIA-232
(formerly RS-232) signal will be needed. For USB,
use a KMC KMD-5576 USB Communicator. For
EIA-232, use a third-party interface. (See the instruc-
tions included with those devices and software.) To
connect to the PC data port:
1. Connect the keyed, flat end of the KMD-5624
interface cable (included with the KMD-5576) to
the port on the bottom of the FlexStat.
2. Connect the modular plug of the cable to the
interface device that converts the EIA-485 signal
from the FlexStat into a USB or EIA-232 signal.
3. Connect the suitable cable from the interface
device to the computer's serial or USB port.
Install any required software and configure the
port as necessary.
NOTE: To avoid faulty communication with the
KMD-5576 USB Communicator, the Max
Master number may need to be reduced
to the minimum required for the network
and the driver and latency settings on
the computer may need to be checked or
updated. See
KMD-5576
18
Troubleshooting on page
KMD-5624
Cable
Operation Guide, Rev. K
20.