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Analog I/O Terminals
Conversion Time
148
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Example: When –300 is converted, the sign bit (bit 15) is set to 1 and 300 is
output as the binary value as 12C hexadecimal. The contents of the word is
thus 812C, as shown in the following illustration.
15 14 13 12 11 10 9
1
0
0
0
8
3
(16
)
DRT1-AD04H
First word
First word + 1
First word + 2
First word + 3
If the converted data is a negative number, it is expressed as a two's comple-
ment. The NEG command can be useful to obtain the absolute value from the
two's complement.
DRT1-AD04
AD conversion values are refreshed every 2 ms for each input point.
DRT1-AD04H
AD conversion values are refreshed every 250 ms. It may take up to 650 ms,
however, from when the step response is input until AD conversion data of
90% of that value can be transmitted.
8
7
6
5
4
0
0
0
1
0
0
1
0
1
2
2
1
(16
)
(16
)
Input 0 converted data
Input 1 converted data
Input 2 converted data
Input 3 converted data
Section 4-8
3
2
1
0
1
1
0
0
C
0
(16
)
Bit
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