FB_EcExtSyncCalcTimeDiff

	Outdated function block This function block is outdated.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 Offset	T_LARGE_ INTEGER	Time offset between the TwinCAT "Distributed Clock" system time and the TwinCAT system time
DcToExtTime Offset	T_LARGE_ INTEGER	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 SyncMaster	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. If the difference is greater than 32 bits and the offset between internal and DC Time is greater than 32 bits, then 16#7FFFFFFF is returned.

Requirements

Development environment	Target platform	PLC libraries to include
TwinCAT v3.1.0	PC or CX (x86, x64, ARM)	Tc2_EtherCAT