EtherNet/IP Implicit I/O Connections

Use the EIP Configuration dialogs to configure EtherNet/IP connections for the HART analog I/O module. You can configure the module for the following types of implicit I/O connections:

  • None (no connection – if selected, the settings on this page become read-only)

  • Exclusive Owner Connection

  • Listen Only Connection

Configuring EIP Connections

The following parameters can be configured for an EtherNet/IP connection

Parameter

Description

RPI

The refresh period for this connection. Set this parameter to a value from 20...1000 ms. Default = 20 ms.

Input T->O

Input size

(read-only) The number of bytes reserved for input data. The number is calculated by the DTM, based on the settings entered in the Process Data page. The default value depends on the module:

  • BMEAHI0812(H) = 140 bytes

  • BMEAHO0412(C) = 72 bytes

NOTE: Control Expert reserves input data in increments of 2 bytes (1 word).

Input mode

The transmission type:

  • Point to point: Transmission from adapter to scanner.

  • Multicast: Transmission from a scanner to a multicast IP address (default).

NOTE: An Exclusive Owner connection can be either point to point or multicast. A Listen Only connection is multicast.

Input type

Ethernet packet type – fixed or variable length – to be transmitted. Only fixed-length packets are supported.

Input priority

The transmission priority. Values can include:

  • Scheduled (default)

  • Low

  • High

Input trigger

The transmission trigger. Values can include:

  • Cyclic (default)

  • Change of State

Output O->T

NOTE: Output group parameters are configured only for Exclusive Owner connections. Listen Only connections do not send output.

Output size

(read-only) The number of bytes reserved for output data. The number is calculated by the DTM, based on the settings entered in the Process Data page. The default value for both the BMEAHI0812(H) and the BMEAHO0412(C) is 1 byte.

NOTE: Control Expert reserves output data in increments of 2 bytes (1 word).

Output mode

The transmission type. For output transmissions over Exclusive Owner connections, only Point to point is supported.

Output type

Ethernet packet type – fixed or variable length – to be transmitted. Only fixed length packets are supported.

Output priority

The transmission priority. Values can include:

  • Scheduled (default)

  • Low

  • High