X20 system modules • Counter modules • X20DC1176
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X20 system User's Manual 3.10
4.11.3.8.4 Encoder - Communication
4.11.3.8.4.1 Counter for verifying the data frame
Name:
SDCLifeCount
The 8-bit counter register is needed for the SDC software package. It is incremented with the system clock to allow
the SDC to check the validity of the data frame.
Data type
Value
SINT
-128 to 127
4.11.3.8.4.2 Display of the counter state
Name:
Encoder01
The counter state of the incremental encoder is displayed as a 16 or 32-bit counter value. Only the 16-bit value
is available in the bus controller function model.
Data type
Value
INT
-32768 to 32767
DINT
1)
-2.147.483.648 bis 2.147.483.647
1)
Can only be configured in the standard function model
4.11.3.8.4.3 Net time of the last valid counter value
Name:
Encoder01TimeValid
The net time of the last valid counter value is the time of the last valid counter value recorded on the module. The
user is able to determine the validity of the counter value by evaluating its age in the program. This means that the
module and error status bits do not have to be checked additionally to determine the validity of the value.
The net time of the last valid counter value that was read is displayed as a 16 or 32-bit value. Only the 16-bit value
is available in the bus controller function model.
Data type
Value
Information
INT
-32768 to 32767
DINT
1)
-2.147.483.648
bis 2.147.483.647
NetTime in µsec.
1)
Can only be configured in the standard function model
4.11.3.8.4.4 Net time of the last counter value change
Name:
Encoder01TimeChanged
For slow X2X Link cycles, the net time of the last counter value change can be used to more accurately determine
the speed.
The net time of the last counter value change is displayed as 16 or 32-bit value. Only the 16-bit value is available
in the bus controller function model.
Data type
Value
Information
INT
-32768 to 32767
DINT
1)
-2.147.483.648
bis 2.147.483.647
NetTime in µsec.
1)
Can only be configured in the standard function model
