Rockwell Automation 57C570 AutoMax PC3000 User Manual - Manual (Page 177)

16Ć1
16.0 INITIALIZING THE AutoMax
PC3000 AĆB REMOTE I/O
SCANNER
Before the AutoMax PC3000 can begin scanning remote I/O, you
must prepare it for scanning by writing and running an initialization
program. Within this program, you must do the following in this
recommended order:
D specify the data communication rate
D enable the remote I/O racks that you want the scanner to scan
D initiate scanning
D place the scanner module in run mode
D make sure all enabled racks are communicating
The following sections describe the data registers you must include
in the initialization program. For a sample program in BASIC and
Enhanced Ladder Logic languages, see Appendix G, Examples of
Remote I/O Programs."
For information about: See this section:
Specifying the Data Communication Rate 16.1
Specifying the Remote Racks That Will Be Scanned 16.2
Initiating Scanning 16.3
Placing the Scanner in RUN Mode 16.4
What to Do Next 16.5
16.1 Specifying the Data Communication Rate
You should have determined the data communication rate in chapter
4, Designing Control Systems That Use the AutoMax AllenĆBradley
Remote I/O Link." All devices on a remote I/O link must be:
D able to communicate at the rate you have chosen
D configured to communicate at that rate
You can configure the communication rate of AllenĆBradley remote
I/O adapters by setting a switch located on the device or on the
chassis in which the adapter resides.
To specify the PC3000's remote I/O data communication rate, you
must write a value to register 769 (Data Rate) that corresponds to
the data communication rate you want. See Table 16.1.