EUCHNER HBAS - Manual (Page 16)

EUCHNER Hand-Held Pendant Station
6.3 Optical signaling: Power LED
The Power LED signals the correct supply of power.
The following information is indicated:
Power LED Function
Off Voltage too low
Flashing Power supply in the critical range. Æ no function
Continuously
illuminated
Power supply correct
7. Signaling a key change
Once the hand-held pendant station has been initialized and the communication with the
control system established, the corresponding key byte is sent to the control system on the
operation of a key.
Key byte transfer with simultaneous operation of several keys:
In principle the first key operated is always transferred.
If another key is already pressed when a key is operated, the second key is ignored,
a state change only takes place when the first key operated is released.
If a third key is also pressed, and then the first key released, the key information for the first
key is retained.
Key change
Control system
HBAS
Byte 1 STX (02H)
Byte 1 DLE
Byte 2 KEY BYTE (see key table)
Byte 3 DLE (10H)
Byte 4 ETX (03H)
Byte 5 BCC
Byte 2 DLE
Example: Key S11 is operated
HBAS STX 3BH DLE ETX BCC
Control
system
DLE DLE
Example: Key S11 is released
HBAS STX 30H DLE ETX BCC
Control
system
DLE DLE
092491-07-01/09 Subject to technical modifications Page 16 / 34