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5
5.1 Basic program
In the following example channels CH1 and CH2 are used as voltage inputs. The FX-4AD block is connected
at the position of special function block No.0. Averaging is set at 4 and data registers D0 and D1 of the PC
receive the averaged digital data.
M8002
FROM
K0
K30
Initial
pulse
CMP
K2010
M1
TO
P
K0
K0
TO
K1
K0
FROM
K0
K29
M10
M18
FROM
K5
K0
NO
READY
error
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EXAMPLE PROGRAM
The ID code for the special function block at position
D4
K1
"0" is read from BFM #30 of that block and stored at
D4 in the base unit. This is compared to check the
block is an FX-4AD, if OK M1 is turned ON. These
D4
M0
two program steps are not strictly needed to perform
an analog read. They are however a useful check
and are recommended as good practise.
The analog input channels (CH1, CH2) are setup by
H3300
K1
writing H3300 to BFM #0 of the FX-4AD.
The number of averaged samples for CH1 and CH2
K4
K2
is set to 4 by writing 4 to BFM #1 and #2 respectively.
Do not execute the pulse.
The operational status of the FX-4AD is read from
K4M10
K1
BFM #29 and output as bit devices at the FX base
unit.
If there are no errors in the operation of the FX-4AD,
D0
K2
then the averaged data BFM's are read.
In the case of this example BFM #5 and #6 are read
into the FX base unit and stored at D0 and D1. These
devices contain the averaged data for CH1 and CH2
respectively.
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