User manual

EtherNet/IP 6-4

Assembly Objects and Connections

There are 3 Assembly Object instances accessible from EtherNet/IP: input, output

and status. The input and output assemblies are linked to the input and output data

tables. The status assembly provides current status information about the Bridge-

Way.

The assembly instances associated with these 3 assemblies are listed below.

Connection Points

Class 1 connections can be established to these assemblies using the connection

points listed in Table 6-2.

Connection sizes, when connecting to the input and output assemblies can be set

according to the size of the I/O data tables configured in the DeviceNet scanner

and the status and command words in the I/O assemblies. (see the assembly for-

mats below) If a connection is created with a size larger than that configured in the

DeviceNet scanner, the extra data will be filled with 0.

Assembly

Instance

Description Size in Bytes

100 Input 500 max

101 Status 128

150 Output 496 max

Table 6-1 EtherNet/IP Assembly Instances

Conn

Point

Description Size

in Bytes

Use

198 Input-Only

Heartbeat

0 Output connection point

for input-only connections.

199 Listen-Only

Heartbeat

0 Output connection point

for listen-only connections.

100 Input 4-500 Input connection point.

101 Status 128 Input connection point.

150 Output 8-500 Output connection point.

Table 6-2 EtherNet/IP Connection Points