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Configuration of IP Address is Required Before Using Ethernet Communications The Ethernet Interface cannot operate on a network until a valid IP address is configured. The necessary Ethernet addressing information must be configured prior to actual network operation. Use one of the following methods to assign an IP address: ■ Assign the IP address using hardware configuration in the CIMPLICITY ME programming software. Store the configuration to the RX7i. ■ Connect a serial terminal to the Station Manager port of the Ethernet Interface module. Then use the CHSOSW command to enter the desired IP address. For details, see Station Manager for the PACSystems RX7i, GFK-2225. ■ The Ethernet Interface automatically obtains a temporary IP Address from a BOOTP server on the network. For details, see TCP/IP Ethernet Communications for the PACSystems RX7i, GFK-2224. Proper IP Addressing is Always Essential The Ethernet Interface Module must be configured with the correct IP Address for proper operation in a TCP/IP Ethernet network. Use of incorrect IP addresses can disrupt network operation for the PACSystems RX7i and other nodes on the network. Refer to TCP/IP Ethernet Communications for the PACSystems RX7i, GFK-2224 for important information on IP addressing. When storing a new HW configuration to the RX7i, be sure that the HW configuration contains the proper Ethernet addressing data (IP Address, Subnet Mask, and Gateway IP Address) for the RX7i. Note: CIMPLICITY Machine Edition programming software maintains the target IP address (used to connect the programmer to the target) independent of the contents of the HW Configuration for that target. The target IP address is set in the Target Properties in the CME Inspector window. Storing a HW Configuration whose Ethernet addressing data contains an IP Address that is different from the RX7i target IP address will change the IP address used by the target RX7i as soon as the Store operation is completed; this will break the Programmer connection. Before attempting to reconnect the Programmer, you must change the target IP address in the Target Properties in the CME Inspector window to use the new IP address. To regain communication at the former IP address, use the manual corrective action described above. Storing a HW Configuration containing default (0.0.0.0) or incorrect Ethernet addressing data to the PACSystems RX7i will result in loss of the Programmer connection and will require manual corrective action as described above. Default IP Address (0.0.0.0) Attempts to Set IP Address via BOOTP The default IP address value (0.0.0.0), whether obtained from HW Configuration or backup configuration, causes the Ethernet Interface to request a temporary IP address from a BOOTP server device on the network. LAN Must be Tree, Not Ring The two Ethernet network ports on the PACSystems RX7i Ethernet Interface must not be connected, directly or indirectly, to the same network device. The hub or switch connections in an Ethernet network must form a tree and not a ring; otherwise duplication of packets and network overload may result. In this situation, the RX7i Ethernet modules will continually reset. Reporting of Duplicate IP Address The PACSystems RX7i does not log an exception or a fault in the PLC Fault Table when it detects a duplicate IP address on the network. EGD Performance Information Users requiring detailed EGD performance information should contact their Application Engineer and request the EGD Performance Application Note for the RX7i (Marketing Bulletin number H-06-03-01).