Dwyer DPM - Manual (Page 45)

Particulate Monitoring Systems
Installation & Operating Manual
Document No. 210-1003-M Page 38 ©2007
Network Addressing and BOOTP Behavior
Communication over an Ethernet network typically requires a device to be setup with two
addressing parameters, a MAC address and an IP address. The MAC address of the Ethernet/IP®
module is fixed and is listed on the enclosure.
The IP address is set to a factory default value of 192.168.0.254 with subnet mask 255.255.255.0
when shipped. To change the IP address a BOOTP server must be present on the Ethernet network.
The following procedure is used to change the IP address:
1. The Ethernet/IP® module must be unlocked to allow changes to its internal configuration. By
default the module is locked at power-up. To toggle the lock state the following explicit
message must be sent to the module:
Service Class Instance Attribute Data
0x45 0x67 0x89 0xAB 0xCD
2. BOOTP operation within the module must be ENABLED. By default BOOTP operation is
disabled. After the IP address has been set BOOTP operation must be set back to disabled.
To ENABLE BOOTP operation the following explicit message must be sent to the module:
Service Class Instance Attribute Data
0x10 0x64 0x01 0x6E 0x01
3. Launch a BOOTP server on the network and configure it with the MAC address of the module
and the desired new IP address and Subnet mask.
4. Cycle power to the module. Once power is re-applied the module will broadcast a BOOTP
request for an IP address. The BOOTP server should respond by assigning the desired IP
address to the module.
5. Unlock the module again to allow changes to the configuration. To toggle the lock state the
following explicit message must be sent to the module: