Rockwell Automation 1746-QV,D17466.18 OPEN-LOOP VELOCITY CONTL - Manual (Page 14)

3–4 Setting Up the Software
Publication 1746-6.18 April 1998
One N file may contain the initial commands, setpoints, and values
for configuring the extend and retract profiles.
Output Image Table
>>>
Command
and
Setpoints
Retract Voltages
Retract Positions
Extend Voltages
Extend Positions
A set of profile data
for initial configuration
Command
and
Setpoints
>>>
>>>
>>>
1746-QV Module
Extend
and Retract
Profiles
>>>
>>>
>>>
>>>
The file contains commands and data starting at the these addresses:
•
command and position setpoints for extend #N7:0
•
command and voltage (velocity) values for extend #N7:10
•
command and position setpoints for retract #N7:20
•
command and voltage (velocity) values for retract #N7:30
The sample ladder program (appendix B) copies profile data into the
output image table from the above locations.
Output Image Table with Profile Data
Word: Function of Output Image Word: Bit #: Description: (For command bits, a 0-to-1 transition enables the command)
0 Command Bits 0 Set to run an extend profile. Co and Bit
Enable the e bit e. /bit
1 Set to run a retract profile.
Enable these bits (O:e.0/bit #)
with our ladder logic where e
2 Set to disable the profile. This bit over-rides bit 0 or 1.
with your ladder logic, where e
represents the I/O slot number.
3 Set to change the current position data to the value of the preset reference
stored in Ge:6.
4 Set to clear any data-entry errors.
5 Set to define words 1-7 as programmed position setpoints for extend.
6 Set to define words 1-7 as programmed voltage values for extend.
7 Set to define words 1-7 as programmed position setpoints for retract.
8 Set to define words 1-7 as programmed voltage values for retract.
9-15 Reserved. Do NOT use.
1-7 Position Setpoint or Voltage Value n/a Important: Position setpoints are in units of 0.01” (200 = 2.00”)
within the range of –327.68” to +327.67”, and voltage values in
5mV units (3005 = 3.005V) within the range of
"10,000mV.
The data monitor mode of your programming software displays the
data files shown below (with values from the ladder program).
Important: Modify these values to suit the preset reference chosen
for the G file and/or to match the LDT length.
Extend Positions: N7:0 32 –45 50 200 300 400 425 500 0 0
Extend Velocities: N7:10 64 3000 3750 4000 4000 4000 4000 4000 0 0
Retract Positions: N7:20 128 –45 50 200 300 400 425 500 0 0
Retract Velocities: N7:30 256 5000 6000 6000 3000 1000 50 25 0 0
Modify N Files in Your
SLC Processor, Off-line