Features and benefits

• The CI867A can be set redundant and supports hot swap.

• CI867A is a single channel Ethernet unit; Ch1 supports full duplex with 100 Mbps speed. Both master

and slave functionality are supported.

• A maximum of 70 slave and 8 master units per CI867A can be used.

MODBUS TCP is an open industry standard widely spread due to its

ease of use. It is a request-response protocol and offers services

specified by function codes.

MODBUS TCP combines the MODBUS RTU with standard Ethernet

and the universal networking standard TCP. It is an applicationlayer

messaging protocol, positioned at level 7 of the OSI model.

The CI867A/TP867 is used for connection between an AC 800M

controller and external Ethernet devices using Modbus TCP

protocol.