LSIS XGT Series - Page 752

Chapter 13 Built-in Analog Function
13-16
13.5.5 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.
(a) 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 to 16,191
-8,192 to 8,191
(2) Reference
-120 to 10,119
Function enabled
0 to 16,000
-8,000 to 8,000
0 to 10,000
(b) Digital output value depending on input range (Precise value)
Analog input range
Classification
Precise value
4 to 20 ㎃
Function disabled
3,808 to 2,191
Function enabled
4,000 to 20,000
0 to 20 ㎃
Function disabled
-240 to 20,239
Function enabled
0 to 20,000
1 to 5 V
Function disabled
952 to 5,047
Function enabled
1,000 to 5,000
0 to 5 V
Function disabled
-60 to 5,059
Function enabled
0 to 5,000
0 to 10 V
Function disabled
-120 to 10,119
Function enabled
0 to 10,000
-10 to 10 V
Function disabled
-10,240 to 10,239
Function enabled
-10,000 to 10,000
(2) Operation
When operating with 4 to 20 mA while being enabled this function, output value for input value change of the
moment is as follows (Output data type: In case of 0 to 16,000).
Input current (㎃)
12 ㎃
3 ㎃
4 ㎃
12 ㎃
21 ㎃
20 ㎃
Digital output value
8,000
8,000
0
8,000
8,000
16,000
Remarks -
Hold last
value
- -
Hold last
value
-