Protege System Controller Reference Manual

Output Compare
The output compare function will take an input variable and scan an input profile to select an output value which
is then written to an output register. The input register can be any valid register. The input profile is defined as a
range of up to 32 Compare Registers. These registers contain a series of values. The input value is compared
with each compare value, starting from the first one, and if a match is found the corresponding output value is
copied to the output register. A match is found when the Input value lies between the values of one compare
register and the next. The output associated with the compare value that is closest to the input value is then
copied to the output register.
To program the Output Compare function ensure that the function you have selected is halted. Select the
function type selection screen as shown below for the Output Compare function.
FN001 Fnc Type
Output Compare
Use the [1] and [3] keys to scroll the function types until you reach the desired function and press [ENTER] to
select this and proceed to the next programmable option. For more information about the list control data entry
refer to the section List Control Data Entry (see page 344).
Function Mode
The function mode determines how this function operates with the system controller. By default a function is set
to normal operation. Normal operation will mean the function is started if it was running when the system
restarts or is completely powered down (AC Failure and Battery Failure). The Run Once mode of operation will
allow the function to run once and then wait to be stopped and started by the user or operator.
FN001 Fnc Mode
Normal
Use the [1] and [3] keys to scroll the function mode until you reach the normal selection and press [ENTER] to
proceed to the next programmable option for the Output Compare function. For more information about the list
control data entry refer to the section List Control Data Entry (see page 344).
Input Register
This the Register which contains the Input value which gets compared to the profile. It would typically be
assigned to a physical analogue input module.
FN001 Input
reg: 00001
To modify the Input register (00001 to 65535), use the keypad as explained in section Entering Decimal
Numbers (see page 341) and press [ENTER].
Output Register
This is the register to which the output is directed. It would typically be assigned to a physical analogue output
module.
FN001 Output
reg: 00001
To modify the Output register (00001 to 65535), use the keypad as explained in section Entering Decimal
Numbers (see page 341) and press [ENTER].
256 PRT-CTRL-SE Protege System Controller Reference Manual | PRT-CTRL-SE