EUCHNER HBLS 072725 - Handbuch (Seite 30)

EUCHNER Pendant station HBLS 072725
067018-08-01/06 Subject to technical modifications page 8 / 22
6. Status Check
The actual status is requested from the pendant through the PLC.
The PLC can request the status of the selector switches and push-buttons at any time, it is
recommended to do this after receiving a NAK, this will “reset” the HBLS.
a.) PLC is requesting actual status from the pendant
HBLS
PLC
Byte
1 STX (02H)
Byte 1 DLE
Byte 2 Status Word (23H)
Byte 3 DLE (10H)
Byte 4 ETX (03H)
Byte 5 BCC
Byte 2 DLE
b.)
Pendant is sending actual status immediately
PLC
HBLS
Byte
1 STX (02H)
Byte 1 DLE
Byte 2 Pushb.-Byte (see table)
Byte 3 Selec1-Byte (see table)
Byte 4 Selec2-Byte (see table)
Byte 5 DLE (10H)
Byte 6 ETX (03H)
Byte 7 BCC
Byte 2 DLE
Status request
Status Word 23H
Push-button 1...12, Selector Switch 1, Selector Switch 2
The control has to receive the whole string of the status information, before sending a new
STX.
example:
wrong: !
pendant HBLS NAK DLE DLE STX
control PLC STX # DLE ETX BCC STX
right: !
pendant HBLS NAK DLE DLE STX Pushb Selec1 Selec2 DLE ETX BCC STX
control PLC STX # DLE ETX BCC DLE DLE