Rockwell Automation AutoMax ControlNet Communication Interface Module - Manual (Page 41)

AutoMax ControlNet Module Page 41
Publication number DSMBCN-UM001B-EN-P February 2003
Unscheduled Messaging
The MBCN supports unscheduled messaging to other nodes on the
ControlNet network. It emulates the interface of the M/N 57C442 Data
Highway Plus module. It uses PCCC commands to communicate with
other nodes on the network.
This section describes how the messaging interface is organized in the
MBCN and provides examples of how the MBCN is accessed by the
application software. For more detailed information on programming,
refer to the AutoMax Programming Language manuals.
The MBCN supports sending messages on the local network only, not
through bridge modules.
Register Organization
The following table shows the memory organization. The following
sections describe the different register areas in more detail.
Registers Description
4 – 63 Status and control registers
64 – 1063 Binary file B3
1088 – 2087 Binary file B4
2088 – 3087 Binary file B5
4384 – 5383 Integer file N7
5384 – 6383 Integer file N8
6384 – 7383 Integer file N9
Figure 9 Summary of Unscheduled Message Registers
WARNING
REGISTERS AND BITS THAT ARE DESCRIBED AS "READ
ONLY" OR FOR "SYSTEM USE" ONLY MUST NOT BE WRITTEN
TO BY THE USER. WRITING TO THESE REGISTERS AND BITS
MAY RESULT IN IMPROPER SYSTEM OPERATION. FAILURE
TO OBSERVE THIS PRECAUTION COULD RESULT IN BODILY
INJURY.