4
Publication 1747-5.41
Module Description and Features
The 1747-ACN15 and -ACNR15
adapters control 1746 remote I/O on the
ControlNet network. The ControlNet network is a communication architecture
that allows the exchange of messages between ControlNet products compliant
with the CI specification.
1747-ACN15 and 1747-ACNR15 adapters support multiple connections to
individual modules or rack connections to a group of modules. Up to 64
connections per adapter are possible with 255 words (max.) supported per
connection. Multiple connections per module are allowed for modules with large
M0 and M1 files. An adapter can control up to 30 slots of 1746 I/O (3 chassis
max.).
The 1747-ACN15 and -ACNR15 adapters features include:
• high speed data transfer
• diagnostic messages
• local communication network access through the network access port
(NAP)
• redundant media (1747-ACNR15 only)
Hardware Components
The adapter module consists of the following major components, as shown in the
following figure:
• ControlNet status and health indicators
• status display and network address
• network access port (NAP)
• ControlNet connectors (one on 1747-ACN15; two on 1747-ACNR15)
• module net address switch assemblies (on top of module)