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

Network Connection

MS/TP Network Communication

Connect the EIA-485 MS/TP network wiring and set
the EOL switches accordingly. (See the Installation
Guide for wiring and end-of-line switch informa-
tion.)
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
BACnet Device Properties on page 17
Communications (BACnet) 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

IP/Ethernet Network Communication

Plug in an Ethernet cable into the (optional) RJ-45
jack on the back.
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.
Only one protocol can be enabled at any time. See
(Advanced) Communications (BACnet) on page
IN9
IN8
GND
IN7
+B
–A
IN4
IN3
FlexStat
GND
IN2
(Advanced)
and (Advanced)
14.)
Off Off EOL On
14.
IP/Ethernet
Network
(Optional)
Outputs
Analog 9
GND 7–9
Analog 8
Analog 7
Relay 6
SC 4–6
Relay 5
Relay 4
Relay 3
SC 1–3

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 Troubleshooting on page
KMD-5576
NOTE: For IP/Ethernet-enabled models, a FlexStat
in one of the Ethernet or IP modes must
(temporarily) be set for MS/TP mode (and
restarted) to communicate through the
data port at the bottom of the cover. See
(Advanced) Communications (BACnet) on
page 14 and
28
KMD-5624
Cable
Resetting the FlexStat on page
Operation Guide, Rev. R
30.
26.