Accuracy; Conversion Speed - Mitsubishi AJ65SBT2B-64AD User Manual

3
SPECIFICATIONS
3.3.3

Accuracy

The accuracy of A/D conversion is measured for the maximum digital output value.
Even when the input characteristics are changed by modifying the offset/gain setting or the
input range, the accuracy remains the same and maintained within the range described in
the performance specifications in Section 3.2.
Figure 3.3 shows a variation range of the accuracy when using the -10 to 10V range.
When the operating ambient temperature is 0 to 55°C, a digital value is output with the
accuracy within ±0.2% (±32digit). (Except when receiving noise influence.)
3.3.4

Conversion speed

The conversion speed of the AJ65SBT2B-64AD is 200µs/channel. The conversion speed
is the time for taking in an analog input value and converting it to a digital output value.
However, the CC-Link system requires additional time for data link processing. Therefore,
the time of the cycle to store the value in CH
calculated by the following formula.
[Formula
Data link processing time = SM + LS × 1 + Remote device station processing time
[ms]
SM: Scan time of master station sequence program
LS: Link scan time
Remote device station processing time: 1ms
For details on the data link processing time, refer to the user's manual of the master
module used.
16000
0
-16000
-10 0
Analog input value (V)
Figure 3.3 Accuracy in -10 to 10V range
*1
]
* 1 This formula is applicable for the data link processing time (normal value) when the master
module is the QJ61BT11N and it is in asynchronous mode.
Variation
range
10
Digital output value (RWrn to RWrn+3) is
3.3 I/O Conversion Characteristics
3.3.3 Accuracy
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