Allen-Bradley PowerFlex 20-COMM-P FRN 1 Series User Manual page 79

Request
RC
"2" ('0010' binary) to write a 8-bit or 16-bit
parameter
"3" ('0011 binary) to write a 32-bit
parameter
SPM
Not used
PNU
Parameter number being written
Subindex
Selects which DPI port to talk to ("0"= DPI
Hosts "5"= 20-COMM-P on PowerFlex 70)
Parameter value high
Contains the high word if writing a 32-bit
parameter
Parameter value low
Contains the write value for a 8-bit or 16-bit
parameter, or the low word if writing a 32-bit
parameter
Writing Parameter 101 [Preset Speed 1] to the PowerFlex 70
(DPI Port 0)
Command
Reply
Using Explicit Messaging (Parameter Protocol)
2000 hex = Change parameter value (word)
1
2065
65 hex = 101 dec (Pr.101)
2
0 DPI Port 0 (DPI Host)
3
0
Not Used
4 64
64 hex = 100 dec = 10.0 Hz
Transferring 16-bit parameter value ("1")
1
1065
Confirms Par. Number of the request ("65")
2 Confirms Par. Access Word 2 of the request
0
Not Used
3 0
Confirms Param. Access Word 4 of the request
4
64
Response
RC
"1" (0001') Transferring a 8-bit or 16-bit
parameter value
"2" ('0010') Transferring a 32-bit parameter
value
"7" ('0111') Request rejected (including fault
number)
SPM
Not Used
PNU
Confirms the Parameter number (equals the
PNU from the request)
Subindex
Confirms the DPI Port (equals the Subindex
from the request)
Parameter value high.
Confirms the high word if writing a 32-bit
parameter.
Parameter value low.
Confirms the write value for a 8-bit or 16-bit
parameter, the low word (if writing a 32-bit
parameter, or the fault code (if RC="7")
6-9