EUCHNER HBLS 072725 - Handbuch (Seite 38)

EUCHNER Pendant station HBLS 072725
067018-08-01/06 Subject to technical modifications page 16 / 22
example 1:
LCD data block - LCD acknowledge block
example 2:
LCD data block - push button 5 activated - LCD acknowledge block – push button released
example 3:
push button 6 activated - LCD data block - LED 5 ON - LCD acknowledge block - push
button released
The typical delay time between the reception of the LCD string and the LCD acknowledge
block is 20 ms.
Therefore, a push button change, happening during the transmission of a LCD string can be
surely recognised by the PLC. Even a LED can be turned ON or OFF during this time delay.
example 4:
status request –
status information: no push button activated, selector switch left 02, selector switch right 03
It is not allowed to break a string, which is already in process.
Before sending a new string, it is necessary to check the input (receiver) buffer for a
STX, pending from the HBLS.