Allen-Bradley PowerFlex 20-COMM-D, User Manual

Page: 35 / 149

Configuring the Adapter 3-15
To use COS (Change of State) data exchange
1. Set bit 0 (the Logic Command/Reference bit) in Parameter 13 -
[DPI I/O Config] to 1 (enabled) and bit 0 (the Logic Status/
Feedback bit) in Parameter 26 - [M-S Output] to 1 (enabled).
Changes to bits in the Logic Status or Feedback trigger messages in
COS data exchange.
Figure 3.22 I/O Configuration Screens on an LCD HIM
2. Set the bits in the Logic Status word that should be checked for
changes in
Parameter 27 - [COS Status Mask] . The bit definitions
for the Status Mask will depend on the drive to which you are
connected. Refer to its documentation.
Figure 3.23 COS Status Mask Configuration Screen on an LCD HIM
3. Set the amount of change to the Feedback that is required to trigger a
Change of State message in
Parameter 28 - [COS Fdbk Change] .
Figure 3.24 COS Fdbk Change Configuration Screen on an LCD HIM
The adapter is now configured for COS data exchange. You must
configure the scanner to allocate it using COS (
Chapter 4 , Configuring
the Scanner ).
Port 5 Device
20-COMM-D
Parameter #: 13
DPI I/O Config
x x x x x x x x x x x 0 0 0 0
1
Cmd/Ref b00
Port 5 Device
20-COMM-D
Parameter #: 26
M-S Output
x x x x x x x x x x x 0 0 0 0
1
Status/Fdbk b00
Port 5 Device
20-COMM-D
Parameter #: 27
COS Status Mask
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1
Bit 0 b00
Value Description
0 Ignore this logic bit. (Default)
1 Check this logic bit.
Port 5 Device
20-COMM-D
Parameter #: 28
COS Fdbk Change
0
0 <> 4294967295