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Programming wiring
MN05013005E
254
Parameter display and parameter set for the SC function
block:
The SC01 function block has no parameters as it is a triggered
system service.
Coil
SC01T: trigger coil
Memory requirement of the SC function block
The SC function block requires 20 bytes of memory.
SC diagnostics
The SC function block only functions when the EZ-NET
network is functioning correctly (
the individual stations and diagnostics”,
Function of the date/time function block
If the trigger coil of the function block is activated, the current
date, the day of the week and time from the sending station is
automatically put onto the EZ-NET network. All other network
stations must accept these values.
This process can be repeated as often as desired. The trigger
coil must be triggered again from the 0 to the 1 state.
Accuracy of time synchronization
The maximum time deviation between the functional stations
is 5 s.
Set cycle time
EZD provides one set cycle time function block ST01. The set
cycle time function block is a supplementary function block for
the PID controller.
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The station that sends its date and time does this when the
seconds value is zero.
Example: The trigger pulse is actuated at 03:32:21
(hh:mm:ss). The other stations are synchronized at
03:33:00. This time is accessed by all other stations.