Rockwell Automation 1395 Digital Reference Adapter for RTP Applications User Manual

Page 62

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Publication 1395-RTP-5.2 - September 1997

8-20

Parameter Table

Parameter 589 – [A> DAC Offset 2]

Use: Offset for Analog Output 2
Program Terminal Units: Volts
Maximum Value: +10V DC
Minimum Value: -10V DC
Default Value: 0V DC

Description: This parameter is not used in the RTP Unwind Drive
applications. This parameter determines the offset applied to the raw
Analog Output 2 value after the Scale Factor is applied. This allows
the User to shift the range of his analog output.

Parameter 590 – [A> Digital Out 1]

Use: Maps Digital Output 1
Program Terminal Units: None
Maximum Value: 16
Minimum Value: 16
Default Value: 16
NOT CHANGEABLE

Description: This parameter has a range of 0 to 16. When the
parameter is set to 16, the output bit is permanently assigned to the
state machine logic which communicates with the main control board
through either configuration parameter 460 (Port A), or 350 (Port B).
The output digital logic software will determine the output conditions
for this output when this parameter is set to 16. When the parameter is
set to any other value, the output will follow that of the configuration
parameter. The default is 9, therefore digital output 1 will follow bit 9
of parameter 450 which is linked to logic status parameter 100 by
default. Bit 9 is the “at speed bit” which will be high any time the
velocity feedback is within a tolerance of the velocity reference of the
main control board. When the bit is set, (ie. equal to 1) the
corresponding solid state output is at 24V DC or high. Digital output
#1 at Terminal TB3-54 is normally the speed match output.

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