B&R Industries X20 System, User Manual

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X20 system modules • Analog input modules • X20AI8321
X20 system User's Manual 3.10 297
4.3.13.8 Register description
4.3.13.8.1 Function model 0 - Standard
Read Write Register Name Data type
Cyclic Non-cyclic Cyclic Non-cyclic
Analog signal - Configuration
16 Configuring the input filter USINT ●
18 Channel type UINT ●
20 Lower limit value INT ●
22 Upper limit value INT ●
Analog signal - Communication
Index * 2 - 2 AnalogInput0N (Index N = 1 to 8) INT ●
30 StatusInput01 USINT ●
31 StatusInput02 USINT ●
4.3.13.8.2 Function model 254 - Bus controller
Read Write Register Offset
1)
Name Data type
Cyclic Non-cyclic Cyclic Non-cyclic
Analog signal - Configuration
16 - Configuring the input filter USINT ●
18 - Channel type UINT ●
20 - Lower limit value INT ●
22 - Upper limit value INT ●
Analog signal - Communication
Index * 2 - 2 Index * 2 - 2 AnalogInput0N (Index N = 1 to 8) INT ●
30 - StatusInput01 USINT ●
31 - StatusInput02 USINT ●
1) The offset specifies the position of the register within the CAN object.
4.3.13.8.3 Analog inputs
Input signals are converted asynchronously in a 1 ms interval.
4.3.13.8.4 Analog input values
Name:
AnalogInput01 to AnalogInput08
The analog input values are mapped to this register.
Data type Value Input signal:
INT 0 to 32767 Current signal 0 to 20 mA or 4 to 20 mA
4.3.13.8.5 Input filter
This module is equipped with a configurable input filter.
4.3.13.8.5.1 Input ramp limitation
Input ramp limitation can only take place when a filter is used; the input ramp is limited before filtering takes place.
The amount the input value changes is checked to make sure that specified limits are not exceeded. If the values
are exceeded, the adjusted input value is equal to the old value ± the limit value.
Configurable limit values:
Value Limit value
0 The input value is used without limitation.
1 0x3FFF = 16383
2 0x1FFF = 8191
3 0x0FFF = 4095
4 0x07FF = 2047
5 0x03FF = 1023
6 0x01FF = 511
7 0x00FF = 255