System Time Registers

These time registers keep track of system time (time since the RMC started up) or real time. These registers can be used for functions such as delay timers, calculating time between events, and comparing motion controller events with the times of other devices.

Register Name	Data Type	Access	Time Base	Rollover	Tag Name	RMC75 Address	RMC150 Address	RMC200 Address
System Time - Time base starts when RMC powers up
Time Gear Master	REAL	Read Only	1.0 s	1 s	_Time	%MD20.10	%MD44.10	%MD18.10
Time, 16th Milliseconds	DINT	Read Only	0.000 062 5 s	1.5 days (231 ms/16)	_Controller.SysTime_16thmsec	%MD20.11	%MD44.11	%MD18.11
Time, Seconds	DINT	Read Only	1.0 s	68 years (231 s)	_Controller.SysTime_sec	%MD20.12	%MD44.12	%MD18.12
Time, Milliseconds	DINT	Read Only	0.001 s	24.8 days (231 ms)	_Controller.SysTime_msec Or: _SysMS	%MD20.13	%MD44.13	%MD18.14
Time, Microseconds	DINT	Read Only	0.000 001 s	35.7 minutes (231 µs)	_Controller.SysTime_usec	%MD20.14	%MD44.14	%MD18.15
Time, Nanoseconds	DINT	Read Only	0.000 000 001 s	1 second (1 billion ns)	_Controller.SysTime_nsec	%MD20.15	%MD44.15	%MD18.16
Time, Loop Ticks	DINT	Read Only	Same as the Loop Time (0.000 125 s to 0.008 s)	3.1 - 198 days (231 loop times)	_Controller.SysTime_loops Or: _SysTicks	%MD20.33	%MD44.33	%MD18.17
Real Time - Time base starts Jan. 1, 1970
Real Time UTC, Seconds	DINT	Read/Write	1.0 s	February 7, 2106 (232 s)	_Controller.RealTimeUTC_sec	n/a	n/a	%MD18.18
Real Time Local, Seconds	DINT	Read/Write	1.0 s	February 7, 2106 (232 s)	_Controller.RealTimeLocal_sec	n/a	n/a	%MD18.20
Real Time, Nanoseconds	DINT	Read/Write	0.000 000 001 s	1 second (1 billion ns)	_Controller.RealTime_nsec	n/a	n/a	%MD18.19

For details on using these registers, see the System Time topic.