Rockwell Automation 1395 Multi-Comm Hardware/Software - Manual (Page 44)

Chapter 3
Configuration & Interfacing
3–33
Figure 3-20. Data Highway + (DH+)
Data Highway +
Token pass w/data
PLC Controller Digital Communications Board
350
Token Pass w/Data
Station #
Data 0
Data 1
Station #
Data 0
Data 1
Station #
Data 0
Data 1
Station #
Data 0
Data 1
•
•
•
525
526
DH+Word 1
Source
DH+Word 1 Read Par
527
528
DH+Word 2
Source
DH+Word 2 Read Par
DH+Word 1 Station #
DH+Word 2 Station #
300
301
529
530
DH+Word 3
Source
DH+Word 3 Read Par
DH+Word 3 Station #
302
531
532
DH+Word 4
Source
DH+Word 4 Read Par
DH+Word 4 Station #
303
DH+Word 0
Sink
351
DH+Word 1
Sink
Note: These use the Station #
that the respective channel was
configured as using dip switches.
Figure 3–21 provides an example of a Message Read and a Message Write.
Rung 2:0 is an example of a Message Read that operates when B3/0
toggles 0 > 1. Rung 2:1 is the message instruction operating on a
continuous basis. Rung 2:2 is a Message Write example. The data monitor
screens associated with the message commands are shown below each
rung.