Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 246)

Publication 1760-UM002B-EN-P - March 2005
4-136 Wiring with Pico GFX-70
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 Pico-Link network is
functioning correctly (see Signs of Life of the Individual Stations and Diagnostics on
page
6-12).
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
Pico-Link 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.
IMPORTANT
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.