Rockwell Automation 25-COMM-P PowerFlex PROFIBUS DPV1 Adapter - Manual (Page 51)

Rockwell Automation Publication 520COM-UM004A-EN-E - November 2013 51
Using Acyclic Messaging Chapter 6
Class 1 Acyclic Read Response Data for Host Parameter 1 [Output Freq]
Class 1 Acyclic Read Response Data Using RSLogix Ladder Logic on page 51
shows the RSLogix ladder logic example, that may be used to interface the
MVI69-PDPMV1 module’s functional block and perform continuous DPV1
Acyclic Read operations.
Class 1 Acyclic Read Response Data Using RSLogix Ladder Logic
Response Data from command reading
the Frequency Reference of the
PF520-series drive. The Error Decode is
indicating “No Error”.
The Error Decode Tag is “Non-Zero” if an
error occurred in the command response.
Class 1 Acyclic Read Command Response Data.
By copying this data to a “Local Program Tag”
with a data type specification of “INT” the
value will read: 45.00 Hz after the conversion.
0
AOI69PDPMV1_60
Connection_Input
Connection_Output
MVI69PDPMV1
Add-On – MVI69-PDPMV1 (Block size 60).
AOI69PDPMV1_60
Local:2:I.Data
Local:2:O.Data
MVI69PDPMV1
AOI69PDPMV1_60
1
done
done
U
L
MVI69PDPMV1.MailboxCommand.AcyclicRead
2
done stop_test
(End)
Move
Source
Dest
MVI69PDPMV1.MailboxControl.In_Last_Out_MB
16874
CurrentMBNumber
16875
MOV
Not Equal
Source A
Source B
MVI69PDPMV1.MailboxControl.In_Last_Out_MB
16874
CurrentMBNumber
16875
NEQ
Equal
Source A
Source B
MVI69PDPMV1.MailboxControl.In_Last_Out_MB
16874
MVI69PDPMV1.MailboxControl.In_Last_In_MB
16873
EQU