#### Setting OptiFlex™ controller IP addresses For the WebCTRL® server to communicate with Automated Logic® controllers on the IP network, the WebCTRL® server and each controller must have the following: IP address (unique on the IP network) Subnet mask Default gateway address, if your system has a default gateway (IP router) Use one of the IP addressing schemes described below with the associated instructions that follow.
Use a... | If...
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DHCP IP Address generated by a DHCP server | The IP network uses a DHCP server for IP addressing
Custom Static IP Address from your network administrator | You do not use a DHCP server and the answer to any of the following questions is yes. Will the WebCTRL® system: Share a facility's existing IP data network? Have 199 or more Automated Logic® IP devices, or 254 or more devices with static IP addresses? Be connected to the Internet? Have at least one device located on the other side of an IP router? Have any third-party IP devices?
Default IP Address that your system creates | The answer to all of the above questions is no.
NOTE Carefully plan your addressing scheme to avoid duplicating addresses. If third-party devices are integrated into the system, make sure your addresses do not conflict with their addresses.
In This Section To set the IP address in the controller setup pages To remotely change a OptiFlex™ controller's custom IP address
##### To set the IP address in the controller setup pages You must define the OptiFlex™ controller's IP address in 2 places, in SiteBuilder and in the controller setup pages. Defining it in the controller setup pages sets the IP address in the controller. To open the controller setup pages: Connect an Ethernet cable from a computer to the controller as shown below. If your computer uses a static IP address, set the address to 169.254.1.x, where x is 2 or greater. If it uses a DHCP address, leave the address as it is. Turn off the computer's Wi-Fi if it is on. Open a web browser on the computer. Navigate to http://local.access or http://169.254.1.1 to see the controller setup pages. To set a DHCP IP address On the controller setup pages Modstat tab, find the controller’s Ethernet MAC address and write it down. On the Ports tab under IP Port, select DHCP. Click Save. Write down the IP Address. Give the DHCP network administrator the IP address and Ethernet MAC address and ask him to reserve that IP address for the controller so that it always receives the same IP address from the DHCP server. To set a custom IP address Obtain the IP address, subnet mask, and default gateway address for the controller from the facility network administrator. On the controller setup pages Ports tab under IP Port, select Custom Static. Enter the IP Address, Subnet Mask, and Default Gateway addresses that the network administrator gave you. Click Save. To set a default IP address Default IP addressing assigns the following to the controller: IP address = 192.168.168.x where x is the setting on the rotary switches in the range from 1 to 253 Subnet mask = 255.255.255.0 Default Gateway = 192.168.168.254 Set the controller's three rotary switches to a unique address on the network. Set the left rotary switch to the hundreds digit, the middle switch to the tens digit, and the right switch to the ones digit. EXAMPLE The switches below are set to 125. On the controller setup pages Ports tab under IP Port, select Default IP Address. Click Save. NOTE The default address is an intranet address. Data packets from this address are not routable to the Internet.
4. ##### To remotely change a OptiFlex™ controller's custom IP address Steps 1 through 5 below change the IP address in the controller. Steps 6 through 10 change it in the system database. Communication with the controller will be disrupted until all steps are performed. On the WebCTRL® Network tree, go to the controller's Driver > BACnet Router Properties page. Under IP Configuration, select Enable IP configuration changeover. In the Next column, type the new IP Address, Subnet Mask, and Default Gateway Address. Type the UDP Port that your server is using to communicate to all controllers. NOTE You must enter values in all 4 fields, even if the values will not change. Do one of the following.
   Set the Changeover timeout field to... | To have the controller use the Next settings...
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   0:00 | As soon as the controller can communicate with the Next Default Gateway Address.
   A specific length of time | As soon as the controller can communicate with the Next Default Gateway Address, or when the timeout expires, whichever occurs first.
Click Accept. On the System Configuration tree, select Connections. On the Configure tab, select the BACnet/IP Connection, then click Stop. On the Network tree, go to the controller's Properties page. Make the necessary changes in the Address, Subnet mask, and Default Gateway fields. Click Accept. On the System Configuration tree, select Connections. On the Configure tab, select the BACnet/IP Connection, then click Start. On the Network tree, go to the controller's Properties page, then click Module Status to verify communication with the controller.