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The quiescent bus potential is fixed with the resistors R
R
.
u
= 390 Ω
R
d
= 150 Ω
R
t
= 390 Ω
R
u
Wiring should take place in accordance with Fig. 3. The resistors
R
, R
and R
should be installed in the 9-pin bus connector in
d
t
u
such way that the recorder can be separated from the bus with
the bus remaining closed.
Data formats
The data to be transmitted can be formatted in four different
ways:
− Type BYTE
Value range 0...255
− Type CHAR
Value range −128...+127
− Type WORD
Value range 0...65535
− Type FLOAT
Value range
±1.175494E−38..±3.402823E+38
BYTE
The BYTE format is used for the selection of parameters from
the tables in the "Parameter" section.
CHAR
The CHAR format is used when ASCII characters are
transmitted. Hex-codes must be used.
WORD
The WORD format consists of 2 bytes and is used when
integers are to be transmitted without preceding signs (integer
values). During transmission, high bytes precede low bytes.
4 Technical Data... • Data formats
, R
und
d
t
Fig. 3
Bus end wiring
Z-17340
For example: The value 820 should be transmitted.
820 dec = 03 34 hex
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