FB_EcExtSyncCheck
 | Outdated function block This function block is outdated. Use the function block FB_EcExtSyncCheck64 instead. |
The function block FB_EcExtSyncCheck checks whether the internal and external clocks are synchronous. See function block FB_EcExtSyncCalcTimeDiff.
Inputs
VAR_INPUT
nSyncWindow : UDINT;
bNotConnected : BOOL;
END_VAR
Name | Type | Description |
|---|---|---|
nSyncWindow | UDINT | Time window within which the internal and external clock are regarded as synchronous. |
bNotConnected | BOOL | TRUE = connection to external clock is interrupted. |
Inputs/outputs
VAR_IN_OUT
DcToTcTimeOffset : T_LARGE_INTEGER;
DcToExtTimeOffset : T_LARGE_INTEGER;
ExtTime : T_DCTIME;
IntTime : T_DCTIME;
END_VAR
Name | Type | Description |
|---|---|---|
DcToTcTimeOffset | T_LARGE_INTEGER | Time offset between the TwinCAT "Distributed Clock" system time and the TwinCAT system time |
DcToExtTimeOffset | 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
bSynchronized : BOOL;
nTimeDiff : UDINT;
nOffsetFromSyncMaster : DINT;
END_VAR
Name | Type | Description |
|---|---|---|
bSynchronized | BOOL | TRUE = external and internal clock are synchronous |
nTimeDiff | UDINT | Current time difference between the two clocks |
nOffsetFrom | DINT | Offset to sync master |
Requirements
Development environment | Target platform | PLC libraries to include |
|---|---|---|
TwinCAT v3.1.0 | PC or CX (x86, x64, ARM) | Tc2_EtherCAT |