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Analog Outputs Section 7-10
3. The high-speed analog sampling function stops when the specified num-
ber of high-speed analog input data samples have been collected.
The following diagram shows how this method can be used to collect dis-
placement data from a particular workpiece position.
The sampled data can be processed to calculate and store the average, max-
imum, and minimum values in multiple ranges specified. A judgement output
can also be generated.
7-10 Analog Outputs
7-10-1 Applicable Models
7-10-2 Outline
The FQM1-MMA21 Motion Control Module can generate analog output sig-
nals for two ports. Each output can be set independently to one of four signal
types:
−10 to +10 V, 0 to 10 V, 0 to 5 V, or 1 to 5 V.
Normally, the analog values stored in A560 and A561 are output cyclically
during END refreshing, but the outputs values can also be immediately
refreshed with the SPED(885) instruction for step-pattern outputs or the
ACC(888) instruction for sloped outputs.
@CTBL
P
S
S+1
S+2
S+3
CTBL
P
M
S
4 to 20 mA
FQM1-MMA21 Motion Control Module
(for analog inputs)
Main program
Interrupt task
Origin reached
Interrupt started
Generates target value comparison
interrupts for the high-speed
counter PV (linear counter).
Performs analog sampling based on
target value comparisons with the
high-speed counter PV (circular counter).
Comparison table starts at S.
Analog input sampling
position
Data sample storage area
Number of data samples
Sampling positions and collection of
sampled displacement data (analog)
Displacement
sensor
Pulse input
(position)
Encoder
Analog input sampling start points
High-speed
travel
Origin Origin Origin
Linear counter
Circular counter
Analog input
sampling
Displacement
Model Functions
FQM1-MMA21 Motion Control Module for Analog I/O