FB_EcExtSyncCalcTimeDiff
![FB_EcExtSyncCalcTimeDiff 1:](Images/png/2285570059__Web.png)
![]() | Outdated function block This function block is outdated. Use the function block FB_EcExtSyncCalcTimeDiff64 instead. |
The function block FB_EcExtSyncCalcTimeDiff
calculates the difference between external and internal time, taking into account the time offsets.
Inputs/outputs
VAR_IN_OUT
DcToTcTimeOffset : T_LARGE_INTEGER;
DcToExtTimeOffset : T_LARGE_INTEGER;
ExtTime : T_DCTIME;
IntTime : T_DCTIME;
END_VAR
Name | Type | Description |
---|---|---|
DcToTcTime | T_LARGE_ | Time offset between the TwinCAT "Distributed Clock" system time and the TwinCAT system time |
DcToExtTime | T_LARGE_ | Time offset between the TwinCAT "Distributed Clock" system time and an external time |
ExtTime | T_DCTIME | External time in TwinCAT "Distributed Clock" system time format |
IntTime | T_DCTIME | Internal time in TwinCAT "Distributed Clock" system time format |
Outputs
VAR_OUTPUT
nTimeDiff : UDINT; (*with difference greater than 32 bit timeDiff = 0xfffffff*)
nOffsetFromSyncMaster : DINT; (*less than 32 bit int Offset = 0x80000000, greater than 32 bit int Offset = 0x7FFFFFFF*)
END_VAR
Name | Type | Description |
---|---|---|
nTimeDiff | UDINT | If the difference is less than 32 bits, the time difference is returned. If the difference is greater than 32 bits, 16#FFFFFFFF is returned. |
nOffsetFrom | DINT | If the difference is greater than 32 bits and the offset between internal and DC Time is less than 32 bits, then 16#80000000 is returned. |
Requirements
Development environment | Target platform | PLC libraries to include |
---|---|---|
TwinCAT v3.1.0 | PC or CX (x86, x64, ARM) | Tc2_EtherCAT |