Download Installation Instructions

5-2
PLC Ladder Logic Programming
What Are PLC Ladder Logic
Programs?
A PLC ladder logic program lets you control the drive and the
messaging from the PLC to the drive. Figure 5.1 shows how the I/O
image table for the controller (e.g., PLC) relates to the 1336 PLUS
drive when a 1203-CN1 module is used.
Figure 5.1
I/O Image Table
ControlNet
Controller
SCANport
1203-CN1 Module➂
1336 PLUS Drive➃
Output➀
Nxx:0
Nxx:1
Nxx:2
Nxx:3
Nxx:4
Nxx:5
Nxx:6
Nxx:7
Nxx:8
Nxx:9
Logic Command
Reference
Data Link A1
Data Link A2
Data Link B1
Data Link B2
Data Link C1
Data Link C2
Data Link D1
Data Link D2
Logic Command
Reference
Data In A1
Data In A2
Data In B1
Data In B2
Data In C1
Data In C2
Data In D1
Data In D2
Input➁
Nxx:0
Nxx:1
Nxx:2
Nxx:3
Nxx:4
Nxx:5
Nxx:6
Nxx:7
Nxx:8
Nxx:9
➀
Logic Status
Feedback
Data Link A1
Data Link A2
Data Link B1
Data Link B2
Data Link C1
Data Link C2
Data Link D1
Data Link D2
Logic Status
Feedback
Data Out A1
Data Out A2
Data Out B1
Data Out B2
Data Out C1
Data Out C2
Data Out D1
Data Out D2
The N-file number depends on the value entered for the Data Output File field in RSNetWorx. You can also configure this
as an I/O address.
➁
The N-file number depends on the value entered for the Data Input File field in RSNetworx. You can also configure this as
an I/O address.
➂
You must enable each datalink in the module. Refer to Appendix B, 1203-CN1 Module Parameters, and Chapter 3, Getting
Started, for more information.
➃
You must configure the datalinks in the SCANport product. Refer to your SCANport product’s user manual for more
information.
Publication 1203-5.13 – February, 2002