Set up Network Communications
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IM 837-2 • MICROTECH II CHILLER UNIT CONTROLLER
Reset the IP Address and Subnet Mask when
the Chiller is On:
1. Unplug network connections from the communication
module.
2.
Press the pushbutton for more than five seconds and no
more than ten seconds.
3. Release the pushbutton.
4. After another 5 seconds, press and hold the pushbutton
again.
5.
The Status LED stops flashing and then flashes red
quickly.
6. Release the pushbutton when the Status LED starts
flashing red slowly.
7. After three slow red blinks, the LED becomes green, and
then to indicate the command has been successful, it
rapidly blinks dark red three times.
8. Modify your PC settings to be on the same subnet as the
communication module.
9. Log on to the default IP Address (172.16.5.8) and modify
network settings as necessary.
After successfully using the pushbutton, the communication
module only retains the default parameters until the next
reboot is performed. It implements the latest user-specified
parameters after a reboot has been performed without the
pushbutton being pressed.
Test Network Communications
Follow these steps to confirm that your PC is correctly
addressed to allow the exchange of information between the
unit controller and communication module:
1. Open a DOS window (go to Start button\Programs\
Accessories\Command Prompt.)
2. Type “ping 172.16.5.8” at the DOS prompt.
3. Press Enter.
4. Observe response. See
Figure 11
for a typical successful
response.
Figure 11: Ping and Response
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