Specifications

188 Rockwell Automation Publication XXXX-X.X.X - Month Year
Chapter 3 Network Communication
PowerFlex DC Drive
Typical Programmable Controller Configurations
Logic Command/Status Words
See parameter 1328 [Drive Logic Rslt] for more information.
Figure 124 - Logic Command Word
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.
Logic Bits
Command Description15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
xStop
(1)
0 = Not Stop
1 = Stop
xStart
(1)(2)
(1) A “0 = Not Stop” condition (logic 0) must first be present before a “1 = Start” condition will start the drive. The Start command acts
as a momentary Start command. A “1” will start the drive, but returning to “0” will not
stop the drive.
(2) This Start will not function if a digital input (parameters 13…144) is programmed for 2-Wire Control (option 5 “Run”, 6 “Run
Forward” or 7 “Run Reverse”).
0 = Not Start
1 = Start
xJog 0 = Not Jog
1 = Jog
x Clear Faults 0 = Not Clear Faults
1 = Clear Faults
x x Direction 00 = No Command
01 = Forward Command
10 = Reverse Command
11 = Hold Present Direction
x Local Control 0 = No Local Control
1 = Local Control
xMOP
Increment
0 = Not Increment
1 = Increment
x x Accel Rate 00 = No Command
01 = Use Accel Time 1
10 = Use Accel Time 2
11 = Use Present Time
x x Decel Rate 00 = No Command
01 = Use Decel Time 1
10 = Use Decel Time 2
11 = Use Present Time
x x x Reference
Select
(3)
(3) This Reference Select will not function if a digital input (parameters 131…144) is programmed for “Speed Sel 1, 2 or 3” (option 17,
18 or 19). Note that Reference Selection is “Exclusive Ownership”.
000 = No Command
001 = Ref. 1 (Spd Ref A)
010 = Ref. 2 (Spd Ref B)
011 = Ref. 3 (Preset Spd 3)
100 = Ref. 4 (Preset Spd 4)
101 = Ref. 5 (Preset Spd 5)
110 = Ref. 6 (Preset Spd 6)
111 = Ref. 7 (Preset Spd 7)
xMOP
Decrement
0 = Not Decrement
1 = Decrement