Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module - Manual (Page 88)

6-8 MicroLogix 1500 Example Ladder Programs
An example of data table values are shown below:
A value of “200” for the Reference equates to 20.0 Hz. A value of “100”
for drive Parameter 78 - [Jog Frequency] equates to 10.0 Hz.
Since CH2 and CH3 ladder routines are similar to the CH1 routine, they
are not provided.
The ladder example provided in this section is based on a 1769-SM2
module in slot 1 with five PowerFlex 4/40 drives connected to CH1 and
to CH2, and one PowerFlex 70 connected to CH3 (
Figure 6.4 ). The
ladder example demonstrates the following functionality for each
channel’s drives:
•
Send a Logic Command to control the drive (for example, start, stop).
•
Send a Reference to the drive and receive Feedback from the drive.
•
Receive Logic Status information from the drive.
•
Write and read parameters.
Explicit messaging (parameter read/write) capability varies between the
RSLogix software packages and controllers:
•
Versions of RSLogix 500 before v6.30 do NOT support creating a
Message instruction for the 1769-SM2 module. This limits the
MicroLogix 1500 to performing I/O messaging (Logic Command/
Reference, and Logic Status/Feedback) only.
•
RSLogix 500 v6.30 (or higher) must be used with a MicroLogix
1500 LRP Series C (or newer) controller to create Message
instructions to send explicit messages to the 1769-SM2 module.
Multi-Drive Mode