Rockwell Automation 25-COMM-P PowerFlex PROFIBUS DPV1 Adapter - Manual (Page 60)

60 Rockwell Automation Publication 520COM-UM004A-EN-E - November 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 56 for an example of a system layout
diagram.
See Multi-Drive Example of I/O Image on page 58 for the number of 16-bit
input and output words to use for your application. In this example, the number
of input words is 10 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.
Drive 0 (PowerFlex 525) Settings for the Example Program
• Parameter C169 [MultiDrv Sel] is set to 1“Network Opt”.
• The following parameters are set:
Drive 1...4 (PowerFlex 4M) Settings for the Example Program (in all
drives)
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
Value
Parameter Drive 1 Drive 2 Drive 3 Drive 4
P106 [Start Source] 5 5 5 5
P108 [Speed Reference] 5 5 5 5
C302 [Comm Data Rate] 4 4 4 4