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WebControl
PLC FAQ
We include some users frequently asked questions here:
6.5
Login and Configuration
1-1Q: Can you tell me how to connect with Windows Explore? I cannot communicate?
1-1A: If you have DHCP server on your network, please check with your DHCP
server log, WebControl is likely obtained an IP address from your DHCP server.
Once your find out the IP address assigned by DHCP server, you can use browser to
connect to:
http://what-ever-dhcp-assigned-ip/
You will see the login screen.
If you don't have DHCP server on your network, WebControl's default IP address is
192.168.1.15. You must change your computer's IP address temporarily to
192.168.1.1, (make sure no other host using that IP address on your network), then
from IE browser enter:
http://192.168.1.15/
You will see the login screen.
1-2Q: I have problem to setup the clock, it does not work, even I setup my network
and DNS server correctly?
1-2A: Please check with your ISP to make sure the DNS server IP address is valid. If
you have Linux computer, you can use dig command to make sure that DNS server
IP can resolve the ntp.org. Please note that many ISPs restrict the DNS access from
outside its own IP address range. If your DNS server IP is not from your ISP, it may
not work.
dig ntp.org @your-dns-server-ip
1-3Q: What is the default user ID and password, can I change it?
1-3A: The default user ID and password is admin/password, all lower case. User can
change both user ID and password.
6.6 Temperature Sensor Support
2-1Q: The document stated supporting DS1822/DS1820 1 Wire Temperature
Sensors, I assumed the whole DS18xx family of devices would work. I used a
DS18S20+ and get about 3.5 degrees C when powered, 10.6 when parasitic
powered. It should read 23-24 at room temperature. For power I tried pin 3 of the
temperature terminal and pin 3 of the humidity terminal and the result is the same.
2-1A: WebControl™ can simultaneously connect 8 optional
DS18B20/DS1822/DS18S20 based digital temperature sensors. In the past we
require 12bit temperature sensor. Now, we lose the requirement to 12bit and 9 bit
Maxim-IC temp sensors. We still do not support parasite part.
Copyright(c) 2008,-2013 CAI Networks, Inc.
TM
WebControl
PLC User Guide Version 3.02.17f
45
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