Function Blocks
AO Function Block
80 HC900 Hybrid Control Designer Function Block Reference Guide Revision 11
2/07
Configuration parameters
AO’s Address starts at Module 4.
Table 23 Analog output configuration parameters
Properties Group Parameter Index # Parameter Description Value or Selection
Block Order
N/A Execution Order for Block
Read Only. To change
block order, right-click on
a Function Block and
select Execution Order.
Address Rack
This is the address of the
selected Rack.
Enter a value
from 1 to 5.
I/O Module
Address of selected I/O
module (must match model
selection guide)
Enter a value:
from 1 to 12
Channel
Channel on selected I/O
Module
Enter a value:
from 1 to 4
Range Range Hi
1
High Range Value Engineering
Unit - value of input that
corresponds to 100 % output
value
-99999 to 999999
Default = 100
Range Low
2
Low Range Value Engineering
Unit - value of input that
corresponds to 0 % output
value
-99999 to 999999
Default = 0.0
Output
mA at range
High
3
Value of mA output that
corresponds to 100 % output
signal (for example: 20 mA)
0 to 20
Default = 20
mA at Low
Range
4
Value of mA output that
corresponds to 0 % output
signal (for example: 4 mA)
0 to 20
Default = 4
Output Limits
mA at range
High Limit
5
Value of mA that you want to
set the High Range Limit
0 to 21
Default = 21
mA at Low
Range Limit
6
Value of mA that you want to
set the Low Range Limit
0 to 21
Default = 0
Failsafe
Failsafe
Value
7 Failsafe Value 0 to 21 mA
Default = 0
Failsafe Type
8 Type of Failsafe
High - sets the output of
the block to High Output
Range limit when failure is
detected
Low - sets the output of
the block to Low Output
Range Limit when failure
is detected
Hold - hold the output at
the last value just prior to
the failure being detected
Slew Rate
Slew Time in
seconds
9
Slew Rate is the maximum rate
of change required to drive the
output from full OFF (0% -
typically 4 mA) to full ON
(100% - typically 20mA). The
Enter a value of from 0.0
to 99
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