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2.2
Telegrams for the diagnostics interface (DIS)
2.2.1
Overview
Every transfer telegram of the DIS has an exclusive start sequence with a length of 32 bits.
Each bit has a length of 100 ms.
The first six transferred bits - the header bits - designate the device type and the content of
the telegram. Bit 7 - bit 31 contain the user information (information that can be evaluated).
Bit 32 contains the parity.
Bit no. Meaning
1 - 3
Device identifi-
cation
4
Reserved
5 - 6
Telegram iden-
tification
7 - 31
Data
32
Parity
SITOP PSU6200 Diagnostics Interface
Application Manual, 04.2019, A5E46632255-1-76
Resolution
Value range
0 - 7
001: SEL1200
010: SEL1400
011: PSU6200
000, 100 - 111: reserved
-
-
0 - 3
00: -
01: -
10: -
11: -
-
-
0 / 1
-
2.2 Telegrams for the diagnostics interface (DIS)
Comment
This bit is always "0"
Marks the following user information (information
that can be evaluated). Meaning dependent on the
device identification. See the following chapter
Meaning dependent on the device and telegram
identification. See the following chapter
The parity bit (odd parity) at the end of the telegram
is "1" if the sum of all of the preceding 1 bits in the
telegram is even. Otherwise, the parity bit is "0". The
start sequence is not taken into account when gen-
erating the parity bit.
Technical description
9
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