Rockwell Automation 1785 PLC-5 Specifications download pdf (Page 26)

26 PLC-5 Ethernet Interface Module

Publication 1785-IN019B-EN-P - January 2007

Based on this configuration, the BOOTPTAB file would look like this:

Run your BOOTP server utility and then cycle power on the chassis that contains the

Ethernet interface module. This sends the configuration information to the module.

Apply Power to the Chassis

When you cycle power, the interface module performs the following functions:

• establishes communication with the controller.

• broadcasts BOOTP requests if BOOTP is enabled.

Establish an Ethernet Connection

The module supports 64 simultaneous connections per module. A connection is a unique

path to an end device, such as a ControlNet controller on a ControlNet link attached via a

1756-CNB module. Each unique path uses a different connection. There is an exception for a

controller on a DH+ link attached via a 1756-DHRIO module. Each 1756-DHRIO module

uses only one connection, regardless of how many devices are attached to it and how many

paths you define to those devices.

Multiple MSG instructions can use the same path to a device, but only one connection is used

because the path is the same.

# Legend: gw -- gateways

# ha -- hardware address

# ht -- hardware type

(1)

# ip -- host IP address

# sm -- subnet mask

# vm -- BOOTP vendor extensions format

(2)

# tc -- template host

#Default string for each type of Ethernet client

defaults5E: ht=1:vm=rfc1048

#Entries for 1785-ENET modules:

device1: tc=defaults5E:ip=12.34.56.1:ha=0000BC031234

device2: tc=defaults5E:ip=12.34.56.2:ha=0000BC035678

device4: tc=defaults5E:ip=12.34.56.4:ha=0000BC038827

#Entries for Ethernet PLC-5 controllers:

device3: tc=defaults5E:ip=12.34.56.3:ha=0000BC1C9012

(1)

1 = 10MB Ethernet

(2)

use rfc1048

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Rockwell Automation 1785 PLC-5 Specifications Page 26