(2) Total packet rate capacity = I/O Produced Tag, max + HMI/MSG, max Packet rates vary depending on packet size. For more detailed specifications, see the capacity section of the EDS file for the

catalog number.

(3) These are the maximum numbers of CIP I/O connections.

EtherNet/IP Network Connections

Compact GuardLogix 5370 controllers use connections to manage

communication on the EtherNet/IP network. A connection is a point-to-point

communication mechanism that is used to transfer data between a transmitter

and a receiver. Connections can be logical or physical.

You indirectly determine the number of connections the controller uses by

configuring the controller to communicate with other devices in the system.

Connections are allocations of resources that provide more consistent

communication between devices than unconnected messages.

All EtherNet/IP connections are unscheduled. An unscheduled connection is a

message transfer between controllers that the requested packet interval (RPI)

or the program, such as a MSG instruction, triggers. Unscheduled messaging

lets you send and receive data when needed.

Table 8 - Compact GuardLogix 5370 Controller EtherNet/IP Network Port Specifications

CIP

Unconnected

Messages

(backplane +

CIP

Ethernet)

120

256

6000 @ 500

bytes/packet

Socket Interface

The Compact GuardLogix 5370 controller can use socket interfaces to

communicate with Ethernet devices that do not support the EtherNet/IP

application protocol.

Examples of devices that do not support the EtherNet/IP application protocol

but can be used in a Compact GuardLogix 5370 controller application include

the following:

• Modbus TCP/IP device

Rockwell Automation Publication 1769-UM022C-EN-P - June 2018

Packet Rate Capacity

(2)

(packets/second)

SNMP

Support

(password

I/O

HMI/MSG

required)

400 messages/

Yes

second @ 20%

comm. timeslice

Communicate Over Networks

Produced/Consumed Tags

Media

Number of Multicast

(3)

Support

Tags, max

Twisted

• 32 multicast

pair

produced tags

• 128 unicast

produced tags

Chapter 5

Unicast

Available

Yes

Table of Contents

Ethernet/Ip Network Connections; Socket Interface - Allen-Bradley Compact GuardLogix 5370 User Manual