Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 - Manual (Page 50)

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Function Tables Arranged by Purpose Section 1-7
Control using
measurement
results for undu-
lation, distortion,
thickness,
height, diame-
ter, etc., of an
object Judgment pro-
cessing based
on measure-
ment results Reading analog
input values in
high-speed
cycles and per-
forming judg-
ment processing
using ladder
program Analog input +
ladder program-
ming 7-9 Analog Input Functions
Uses analog sensors to detect objects that can't
be detected with ON/OFF sensors and performs
judgment by comparing the analog input value
and internally held threshold values.
Processing with faster tact time is possible using
high-speed analog input conversion (40
µs) and
high-speed cycle times (approximately 2
µs min-
imum when only analog inputs are enabled).
Also, analog sampling at 50- µs intervals (min.) is
possible if analog inputs are set to immediate
refresh and PRV(881) instructions are used in
parallel processing in the ladder program.
Position control
using measure-
ment results Performing sync
control using
high-speed
counter PV posi-
tion information
and analog input
information
simultaneously Synchronous
Data Link Bit
Area 7-6 Pulse Outputs
7-9 Analog Input Functions
Can perform synchronous control while perform-
ing position control on slave axis synchronized
with position based on pulse input or synchro-
nous control while adding analog value from dis-
placement sensor as position control
compensation.
MMP21 and MMA21 used together for this appli-
cation.
Responding
quickly to exter-
nal signals with
analog control Changing ana-
log output
amount as soon
as signal turns
ON Immediate
refresh of ana-
log output • Settings for
immediate
refresh
• SPED(885)/AC
C(888) instruc-
tions
7-10 Analog Outputs
SPED(885) or ACC(888) instructions can be
used to directly refresh analog outputs.
Used to change output amount immediately
after external signal triggers.
Reading analog
input value as
soon as signal
turns ON Immediate
refresh of ana-
log input • Settings for
immediate
refresh
• PRV(881)
instructions
7-9 Analog Input Functions
PRV(881) instructions can be used to directly
refresh analog inputs.
Used to read input values immediately after
external signal triggers.
Holding analog
output at the
maximum value
or at the value at
that time when
set conditions or
errors occur. --- Determining
analog output
value at output
enable OFF or
error Analog output
hold function 7-10 Analog Outputs
The analog output status can be held at the
maximum value, cleared, or held at the current
value at output enable OFF or system errors.
Purpose Operation Main functions
used
Details