CR10 OVERVIEW

 

INPUT/OUTPUT

 

INSTRUCTIONS

Sensors

Specify the conversion of a sensor signal

 

to a data value and store it in Input

 

Storage. Programmable entries specify:

 

(1)

the measurement type

 

(2)

the number of channels to measure

Control

(3)

the input voltage range

(4)

the Input Storage Location

 

(5)

the sensor calibration constants

 

 

used to convert the sensor output to

 

 

engineering units

 

I/O Instructions also control analog

 

outputs and digital control ports.

INPUT STORAGE

Holds the results of measurements or calculations in user specified locations. The value in a location is written over each time a new measurement or calculation stores data to the locations.

PROCESSING INSTRUCTIONS

Perform calculations with values in Input Storage. Results are returned to Input Storage. Arithmetic, transcendental and polynomial functions are included.

OUTPUT PROCESSING

INSTRUCTIONS

Perform calculations over time on the values updated in Input Storage. Summaries for Final Storage are generated when a Program Control Instruction sets the Output Flag in response to time or events. Results may be redirected to Input Storage for further processing. Examples include sums, averages, max/min, standard deviation, histograms, etc.

Output Flag set high

FINAL STORAGE

Final results from OUTPUT PROCESSING INSTRUCTIONS are stored here for on-line or interrogated transfer to external devices (Figure OV5.1-1). The newest data are stored over the oldest in a ring memory.

INTERMEDIATE STORAGE

Provides temporary storage for intermediate calculations required by the OUTPUT PROCESSING INSTRUCTIONS; for example, sums, cross products, comparative values, etc.

FIGURE OV2.1-1. Instruction Types and Storage Areas
OV-8