Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual

Page 178

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Publication 1785-UM012D-EN-P - July 2005

11-4 Communicating with Devices on an Ethernet Network

Ethernet Channel 2 Configuration Fields

This Field

Specifies

Configure by Doing the Following

Diagnostic file

The file containing the channel’s
status information.

Enter an integer file number (10-999). The system creates an integer file
44 words long.

ATTENTION: Assign a unique diagnostic file to each channel. Do not
assign a diagnostic file that is the I/O status file you assigned or any
other used file. Unpredictable machine action can result.

Important: You must define a diagnostics file for a channel configured
for anything but unused (even if you are not using the channel) if you want
status information for that channel.

Ethernet Address

The controller’s Ethernet
hardware address.

Display only

Assigned by Rockwell Automation and cannot be changed. Displayed as
a set of 6 bytes (in hex), separated by colons.

BOOTP Enable

Whether BOOTP is enabled.

Select NO.

Before you specify

No

, make sure you have an IP address specified. With

BOOTP set to

No

, the controller uses the parameters that you specify

locally.

To enable BOOTP, see page 11-5.

IP Address

The controller’s Internet address.

Disable BOOTP first. You cannot manually change the IP address
with programming software if BOOTP is enabled.

Enter an address in this form:

a.b.c.dWhere: a, b, c, d are between 1-254 (decimal)

You must specify the IP address to have the controller connect to the
TCP/IP network. Do not use 0 or 255 as a, b, c, or d in the IP address.

Message Connect
Timeout

The number of milliseconds allowed
for an MSG instruction to establish a
connection with the destination node.

Enter a timeout period in milliseconds. (The controller rounds to the
nearest 250 ms.) The valid range for a timeout period is 0-65,535 ms.

The default is 15,000 ms.

Message Reply
Timeout

The number of milliseconds the
Ethernet interface waits for a reply to
a command it initiated (through an
MSG instruction).

Enter a timeout period in milliseconds. (The controller rounds to the
nearest 250 ms.) The valid range for a timeout period is 0-65,535 ms.

The default is 3,000 ms.

Inactivity Timeout

The number of minutes of inactivity
before the connection is closed.

Enter a timeout period in minutes. The valid range for a timeout period is
0-65,535 minutes.

The default is 30 minutes.

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