Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 240)

240 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Chapter 5 Embedded Feature and Option Module Parameters
Communication
Configurations 20-COMM-* Network Adapter Compatibility
Some 20-COMM adapters can be used with PowerFlex 750-Series drives. See
“20-COMM Carrier” in the Installation Instructions, publication 750-IN001,
for more information.
Typical Programmable Controller Configurations
Embe
dded EtherN
et/IP
89 To Peer Period
To Peer Period
Sets the minimum time that an adapter will wait when transmitting data to a peer.
Important: Changes to this parameter are ignored when P91 [To Peer Enable] is 0 “Off.”
Units:
Default:
Min/Max: Secs
10.00
0.01 / 10.00 RW Real
90 To Peer Skip
To Peer Skip
Sets the maximum time that an adapter will wait when transmitting data to a peer. The
value of P89 [To Peer Period] is multiplied by the value of this parameter to set the time.
Important: Changes to this parameter are ignored when P91 [To Peer Enable] is 0 “Off.”
Default:
Min/Max: 1
1 / 16 RW 32-bit
Integer
91 To Peer Enable
To Peer Enable
Controls whether Peer I/O output is operating. A value of 0 “Off” turns off Peer I/O
output. A value of 1 “Cmd/Ref” overrides the settings in Parameters P31 [DL To Net 15],
P32 [DL To Net 16], P76 [DLs Fr Peer Cfg], and P77 [DLs Fr Peer Act], and automatically
sends the drive's present Logic Command (as Datalink 01) and Reference (as Datalink
02). A value of 2 “Custom” enables Peer I/O output using the Datalink count and settings
provided by the user.
Default:
Options: 0 = “Off”
0 = “Off”
1 = “Cmd/Ref”
2 = “Custom” RW 32-bit
Integer
Fi
le
Grou
p
No. Display Name
Full Name
Description Values
Re
ad
-W
ri
te
Da
ta
T
ype
755
755
755
IMPORTANT When a 20-COMM Carrier (20-750-20COMM) is used to install a 20-COMM
adapter on a 750-Series drive, the upper word (Bits 16…31) of the Logic
Command Word and Logic Status Word are not accessible. The upper word is
only used and accessible on 750-Series communication modules (20-750-*)
and the embedded EtherNet/IP on PowerFlex 755 drives.
IMPORTANT If block transfers are programmed to continuously write information to the
drive, care must be taken to properly format the block transfer. If attribute 10 is
selected for the block transfer, values will be written only to RAM and will not
be saved by the drive. This is the preferred attribute for continuous transfers. If
attribute 9 is selected, each program scan will complete a write to the drives
non-volatile memory (EEprom). Since the EEprom has a fixed number of
allowed writes, continuous block transfers will quickly damage the EEprom. Do
Not assign attribute 9 to continuous block transfers. Refer to the individual
communications adapter User Manual for additional details.