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PREREQUISITES
A computer with a USB port
A USB Link cable — See To communicate through the Local Access port with a USB Link (page 18)
CAUTION If multiple controllers share power but polarity was not maintained when they were wired, the
difference between the controller's ground and the computer's AC power ground could damage the USB Link and
the controller. If you are not sure of the wiring polarity, use a USB isolator between the computer and the USB
Link. Purchase a USB isolator online from a third-party manufacturer.
Using PuTTY
Download and install PuTTY from the PuTTY website
1
(http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html).
Connect the laptop to the local access port of the router, ZS sensor, or an SPT sensor using the USB Link
2
cable(s).
NOTE If using a USB isolator, plug the isolator into your computer's USB port, and then plug the USB Link
cable into the isolator.
To change a router's IP address, subnet mask, or default gateway, set its IP Address DIP switch to Assigned.
3
Start PuTTY.
4
Under Category > Connection, select Serial.
5
Under Options controlling local serial lines, enter the following settings:
6
Field
Serial line to connect to
Speed (baud)
Data Bits
Stop Bits
Chilled Water System Optimizer v2
Installation and Start-up Guide
Connect to
U SB port
7 3/4 in.
Value
Replace X with the computer's port number that the USB Link cable
is connected to.
NOTE To find the port number, select Start > Control Panel >
System > Device Manager > Ports (Com & LPT). The COM port
number is beside Silicon Labs CP210x USB to UART Bridge.
115200
8
1
11
Connect to
Local Access port
1 2 ft
USB Link
CARRIER CORPORATION ©2019
Addressing the controller
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