Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual de usuario descargar pdf (Pagina 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.

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