Device communication
Device communication
iso685-x-B_D00177_07_M_XXEN/07.2019
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10.7 isoData protocol
Data transmission is continuous and cannot be interrupted by the device receiving the
data or influenced in any other way (unidirectional). This protocol cannot be combined
with the BMS protocol.
To evaluate the data by means of a PC or laptop, an USB/RS232-RS485 interface converter
are required. Contact Bender Service to receive this device.
Interface data:
• The RS-485 interface, galvanically isolated from the device electronics
• Connection to terminals A and B.
• Maximum cable length 1200 m (in Mode 1)
A data block is output after each valid measurement.
Mode
Baudrate
Data Bits
Stop Bits
Parity
Flow Control
TX
Interval
[ms]
Bitmask
Support
Frame
Counter
Support
Field
Delimiter
Start
Token
End Token Line End
Mode 1
9600
8
1
None
None
10 * 1000
No
No
0x0F
0x02
0x03
<LF><CR>
Mode 2
115200
8
1
Even
None
1000
No
Yes
'"
'!'
n/a
<CR><LF>
Mode 3
115200
8
1
Even
None
1000
Yes
Yes
'"
'!'
n/a
<CR><LF>
The elements described in the "isoData protocol" table below have a fixed
length in the present implementation. However, isoData is a protocol that
separates individual elements by means of delimiters (see 'Field Delimiter'
in the table above). By using these delimiters, a fixed field length can basi-
cally be dispensed with. It is strongly recommended to implement exter-
nal applications NOT based on field lengths, but based on the element
separators.
