Specifications

PRT-CTRL-SE Protege System Controller Reference Manual | PRT-CTRL-SE 231
Low PGM
The Low PGM output will activate when the input data register (usually an input from an analog register) is below
the set point minus the hysterisis value and has been for the duration of the hysterisis time. The low PGM will
turn off if the input value is above the set point value.
FN001 Low
pgm: --000:00
To modify the low PGM, use the settings as explained in section Entering PGM and PGM Groups (see page
336).
Base Data Register
The Base data register is used as the first register in the list of registers used to configure, program and control
the Value Compare. The only registers that are not included in the base registers are ones that must link to an
analog input or analog output for external sensors (Temp, Daylight (LUX), Water Level). A base data register
setting MUST be set to ensure the system can pick up the set points and data values.
FN001 Base data
reg: 00000
To modify the base data register (00000 to 65535, use the keypad as explained in section Entering Decimal
Numbers (see page 333) and press [ENTER].
Base Data Register Offset
Register Offset Register Function
0 Input Value Set Point
The input value set point is used to determine at what point the comparison input register
value used in the calculation is high or low. The Input Hysterisis value is added or
subtracted from the set point to prevent an oscillation on the output PGM's.
1 Input Hysterisis Value
The hysterisis value that the comparison input must be above or below the setpoint to
activate the low or high PGM outputs. This value is added to the input value or
subtracted dependent on the direction the comparison input is changing.
2 Input Hysterisis Time
The time that the value must be above or below the set point to proceed with activating
the low and high PGM outputs. This setting is the number of seconds the value must be
above or below.
Using the register configuration settings above and the following data values in the configuration registers the
following will be observed. The comparison input register in this example is linked to the first channel on the
Analog Expander. This was tested using a linear variable resistor with a 10V supply reference that can be
connected to the input to allow manual control using the knob on the variable resistor.
Programmed Settings
Base Register is 00100
Value Data Register is 00000 (First Analog Input Channel on AE001)