2 definition of the characters, Priorities on a data collision – EUCHNER HBAS 094594 Benutzerhandbuch

Seite 48

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EUCHNER

Hand-Held Pendant Station

HBAS-094594

095640-02-02/06

Subject to technical modifications

Page 8 / 40

3.2 Definition of the characters

Character format:

8 bits

Value range:

00H ... FFH

The value range is divided up as follows:

Value range

Function

Transfer direction

00H ... 1FH

General control character for protocol

HBAS

Control

system

30H ... 44H

Key code for the keys 1 to 20 and error
bytes

HBAS Control

system

20H ... 53H

Control character or commands for the
LC display, the pulse generator and the
transfer of configuration parameters

Control system

HBAS

80H ... FFH

Character set for the LC display
(see section Character set)

Control system

HBAS

Control characters:

Control

character

Value

Function

Explanation

STX

02H

Start of Text

Start of the character string
to be sent

ETX

03H

End of Text

End of the character string
to be sent

DLE

10H

Data Link Escape

Data transfer switch over

NAK

15H

Negative
Acknowledge

Negative response

BCC

Is calculated,

(section 3.3)

Block Check
Character

Block check character for
checking correct data transfer

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