Omron W343-E1-07 - Manual (Page 296)

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CPU Bus Unit Allocations in the CPU Unit Appendix F
Note 1. If a value other than 00.00.00.00 is set as the local IP address in the CPU Bus Unit System Setup,
even if an IP address is set in the allocated words in the DM Area, it will be overwritten with the setting
in the CPU Bus Unit System Setup.
2. If no local IP address is set in either the CPU Bus Unit System Setup or the allocated words in the
DM Area (m+98 and m+99), the Ethernet Unit will not be able to perform communications. Be sure
to set the local IP address in one of these areas. It is not possible, however, to set the following IP
addresses. If any of these values are set, the ERH indicator will flash.
• IP addresses where all network number bits are 0.
• IP addresses where all host number bits are 0.
• IP addresses where all subnet number bits are 0.
• IP addresses starting with 127 (7F Hex), e.g., 127.35.21.16.