Differences from the m/n 57c442 module interface – Rockwell Automation AutoMax ControlNet Communication Interface Module User Manual

Page 56

Page 56 AutoMax ControlNet Module

Publication number DSMBCN-UM001B-EN-P February 2003

Differences from the M/N 57C442 Module Interface

If you are modifying an existing application for the 57C442 Data
Highway Plus module to work on the ControlNet module, you should be
aware of the following differences between the interface on the two
modules.

• There is no global data on ControlNet.
• There are fewer integer files on the ControlNet module. The

ControlNet module has three integer files (N7-N9). The Data
Highway Plus module has twelve (N7-N18).

• There is no DH+ active node list on the ControlNet module. Use the

ControlNet active node list instead.

• The ControlNet module doesn't accept unsolicited PCCC diagnostic

commands.

• You don't have to explicitly put the ControlNet module online.
• You don't have to set the message timeout; the ControlNet module

sets it based on network parameters.

• The ControlNet module doesn’t support DH+ diagnostic counters

(use the ControlNet counters instead).

• The ControlNet module doesn’t support the DH+ station name.