Rockwell Automation 2100-GK61 DeviceNet to SCANport - Manual (Page 187)

Publication 2100-DU021B-EN-P - January 2004
5-2 Ladder Logic Programming—Including Reading Inputs
What is RSLogix? RSLogix5 (for the PLC-5), RSLogix500 (for the SLC-5/03), and RSLogix5000
(for ControlLogix) software let you create the ladder logic programs you need
and download them to the processor. They also let you monitor the program
as the processor is using it.
For more information on RSLogix5, RSLogix500, or RSLogix5000, consult
the respective software’s documentation.
What are Ladder Logic
Programs? A PLC, SLC, or ControlLogix ladder logic program lets you control the drive
and the messaging from the processor to the drive. Figure 5.1 shows how the
I/O image table for a DeviceNet scanner relates to the 1336 PLUS drive when
a DeviceNet to SCANport Communication Module with Digital Inputs is
used.
Figure 5.1 I/O Image Table
IMPORTANT: Datalinks are optionally enabled in the adapter and configured in the product. Refer
to Chapter 3, and your product’s user manual for more information.
PLC,
SLC,
ControlLogix,
PC
Scanner 2100-GK61
Enhanced DeviceNet
1336 PLUS Drive
DeviceNet
SCANport
Word 0 Logic Command
Word 1 Reference
Word 2 Datalink A1
Word 3 Datalink A2
Word 4 Datalink B1
Word 5 Datalink B2
Word 6 Datalink C1
Word 7 Datalink C2
Word 8 Datalink D1
Word 9 Datalink D2
Word 0 Digital Inputs
Word 1 Logic Status
Word 2 Feedback
Word 3 Datalink A1
Word 4 Datalink A2
Word 5 Datalink B1
Word 6 Datalink B2
Word 7 Datalink C1
Word 8 Datalink C2
Word 9 Datalink D1
Word 10 Datalink D2
Message
Buffers
Word 0 Logic Command
Word 1 Reference
Word 2 Data in A1
Word 3 Data in A2
Word 4 Data in B1
Word 5 Data in B2
Word 6 Data in C1
Word 7 Data in C2
Word 8 Data in D1
Word 9 Data in D2
Output
Mapping
(Write)
Input
Mapping
(Read)
Word 1 Logic Status
Word 2 Feedback
Word 3 Data Out A1
Word 4 Data Out A2
Word 5 Data Out B1
Word 6 Data Out B2
Word 7 Data Out C1
Word 8 Data Out C2
Word 9 Data Out D1
Word 10 Data Out D2
Message
Handler Message Handler