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Ethernet IV Product Guide Page 10 Revision: D 6/14/2005

closed. A configurable parameter is provided to allow receipt of this type of

connection on an alternate port number.

2.6.4 Configuration and Control Protocols

The Ethernet IV module supports the following communications protocols for its

configuration and control applications:

• HTTP Hyper-Text Transfer Protocol provides connectivity for web-page

formatted communication

• Discovery Network discovery protocol – The Discovery Protocol for Ethernet IV is

available upon request.

• TFTP Trivial File Transfer Protocol provides the communication mechanism for

upgrading the Ethernet IV firmware

2.6.5 Address Assignment Protocols

The Ethernet IV supports the following protocols for IP address and network parameter

assignment:

• DHCP

Dynamic Host Configuration Protocol is a method to automatically obtain an IP

Address, subnet mask, gateway and other TCP/IP related parameters on system

restart. In order to use this method successfully, a DHCP compliant server must

be properly configured somewhere on the network. Using DHCP excludes the use

of manual IP Address assignment options.

• ARP / Ping Method for setting IP Address

ARP / Ping provides a proprietary mechanism for changing an Ethernet IV IP

Address. This method is useful for initially configuring a device or recovering an

incorrectly configured device. Sending the module a special ICMP echo request

command changes the Ethernet IV IP Address. This mechanism is able to correct

the configuration of modules that are configured incorrectly, with addressing that

does not match their current network. This functionality may be enabled or

disabled by dipswitch setting on the module.

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Epson TM-U325D Betriebsanweisung Seite 10