LSIS XBE-DC08A, User Manual, Page: 839 / 1284

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Chapter 1 Embedded Analog
1-17
1.5.5 Hold Last Value Function
When input signal exceeds the effective range, last input value is held. This function can be set for each channel by I/O
parameter setting or user program.
1) Used input range
In the channels that allow the hold last value function, the actual ranges provided within each digital conversion value
are shown. For example, in case of operating output data type of unsigned value, original digital output value is shown
from -192 to 16,191. However, if this function is allowed, it will be shown from 0 to 16,000. It is recommended that the
function should be setting when the input value is in the actual range.
(1) Digital output value depending on input range (unsigned value, signed value, percentile value)
Classification Unsigned value Signed value Precise value Percentile value
Function disabled -192~16191 -8192~8191
(2) Reference
-120~10119
Function enabled 0~16000 -8000~8000 0~10000
(2) Digital output value depending on input range (Precise value)
Analog input range Classification Precise value
4 ~ 20 ㎃
Function disabled 3808~20191
Function enabled 4000~20000
0 ~ 20 ㎃
Function disabled -240~20239
Function enabled 0~20000
1 ~ 5V
Function disabled 952~5047
Function enabled 1000~5000
0 ~ 5V
Function disabled -60~5059
Function enabled 0~5000
0 ~ 10V
Function disabled -120~10119
Function enabled 0~10000
-10 ~ 10V
Function disabled -10240~10239
Function enabled -10000~10000
2) Operation
When operating with 4 ~ 20mA while being enabled this function, output value for input value change of the moment
is as follows. (Output data type : In case of 0~16,000)
Input current(
㎃
) 12
㎃
3
㎃
4
㎃
12
㎃
21
㎃
20
㎃
Digital output value 8000 8000 0 8000 8000 16000
Remarks -
Hold last
value
- -
Hold last
value
-