beautypg.com

Function of the example program – Rockwell Automation 25-COMM-E2P PowerFlex 25-COMM-E2P Dual-Port EtherNet/IP Adapter User Manual

Page 102

background image

102

Rockwell Automation Publication 520COM-UM003A-EN-E - June 2013

Chapter 7

Using Multi-Drive Mode

Multi-Drive Ladder Logic
Program for Generic Profile

The following is an example of the ladder logic program for the Generic Profile
and demonstrates using Multi-drive mode with five drives. See

Multi-Drive

Mode Example for Network on page 88

for an example of a system layout

diagram. If you have not set-up your drive using the Generic Profile, see

Using the

RSLogix 5000 or Logix Designer Generic Profile on page 56

for instructions.

See

Multi-Drive Example of I/O Image on page 90

for the number of 16-bit

input and output words to use for your application. In this example, the number
of input words is 12 and the number of output words is 10.

Function of the Example Program

The example program provided is for the CompactLogix family of controllers,
but other Logix-based controllers can also be used similarly. This example
program enables you to:

View status information from the drives such as Ready, Fault, At Speed,
and Feedback.

Control the drives using various Logic Command bits (Stop, Start, etc.)
and Reference.

Perform a single parameter read and write for each drive. The example uses
PowerFlex 4M drive parameter P109 [Accel Time 1] for both so you can
see (read) the change after a write is performed.

The same programming approach can be used with the tags generated by the
Multi-drive Add-On Profile. Note that the tags used in this example will be
different from those created by the Multi-drive Add-On Profile.

Drive 0 (PowerFlex 525) Settings for the Example Program

Parameter C169 [MultiDrv Sel] is set to 1“Network Opt”.

The following parameters are set:

Parameter

Value

Description

P046 [Start Source1]

4

“Network Opt”

P047 [Speed Reference1]

4

“Network Opt”

C175 [DSI I/O Cfg]

4

“Drive 0-4” (5 drives on 1 node)

C171 [Drv 1 Addr]

(1)

(1) The settings for these parameters must match the node address settings in the respective daisy-chained drives.

1

Modbus address of Drive 1

C172 [Drv 2 Addr]

2

Modbus address of Drive 2

C173 [Drv 3 Addr]

3

Modbus address of Drive 3

C174 [Drv 4 Addr]

4

Modbus address of Drive 4