X20 system modules • Other functions • X20CM8323
X20 system User's Manual 3.10
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4.26.4.9.5.7 Reads actual values of the current
Name:
Current01 to Current08
These registers are used to read the actual value of the current from channels 1 to 8. These values have no units
and are used only as characteristic values. A more precise, compensated current measurement is not possible
using this module.
Relationship between register name and channel number:
Register name
Channel number
Current01
Actual value of the current of Channel 1
...
...
Current08
Actual value of the current of Channel 8
If an output is switched off, the corresponding register returns the value 0. After the output is switched on, valid
current measurements are not available on the module until after two X2X Link cycles. The measurements in the
registers are delayed by two cycles to account for this.
When the output is switched on, the corresponding bit in the StatusCurrent register can be used to check whether
the register contains valid measurements. The first measured value is provided with the rising edge of this bit.
Data type
Value
Information
0
Output is switched off
USINT
1 to 255
Current value
4.26.4.9.5.8 Checking for measured values
Name:
StatusCurrent
StatusCurrent01 to StatusCurrent08
These registers can be used to check whether registers Current01 bis Current08 contain valid measured values.
Data type
Value
USINT
See bit structure.
Bit structure:
Bit
Description
Value
Information
0
Output switched off
0
StatusCurrent01
1
Current value of Channel 01 is valid
...
...
0
Output switched off
7
StatusCurrent08
1
Current value of Channel 08 is valid
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