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IC-KP-B6*
Communication in "IRI-B6" mode
Each data field has the following structure:
Words 2 / 4 / 6 / 8
Bit
15
14
13
ERR
L3
L2
Words 3 / 5 / 7 / 9
Bit
15
14
13
C16 C15
C14
ERR: Read error flag, head-related
For commands SF, AF, BF: Flag is always 0.
For command EF: The read error is set when a code carrier is not located within
the detection range.
■
The reading numbers of all active heads are set to 0 when the command is
executed and increase when the corresponding head receives data or a
status message.
identification system sends a data or status message, irrespective of the
head number.
C28 ... 1: 28-bit read only code data, packed in hexadecimal format
■
The identification system sends the read only code as an ASCII string with
7 characters in so-called data format 10. The first three characters of the
string form a hexadecimal number and the remaining four characters form a
decimal number.
The first three characters appear directly in bits C28 to C17 following ASCII
hex conversion. The following four characters are displayed in hexadecimal
format. In order to compare them with data format 10, they must be
converted into a four-digit decimal number:
e.g.: code A764325 (ASCII): C28 ... C1 = xAh, 76h, 10h, E5 (x = ERR,
L3 ... 1).
3.5
PROFIBUS-DP command sequence
Execution of the command begins as soon as a valid command is written using
toggled flag "T". When the command is received, this flag is sent to the master
together with the remaining fields of word 0 as confirmation.
Initial state:
Head number (K3 ... 1)
Execution counter (N4 ... 1)
Status (S4 ... 1)
4 x read error flags (ERR)
4 x reading numbers (L3 ... 1)
4 x read only code data (C28 ... 1)
12
11
10
9
L1
C28 C27
C26
C25
12
11
10
9
C13 C12 C11
C10
L3 ... 1: 3-bit reading number, head-related
In contrast, the execution counter in word 1 increases every time the
8
7
6
5
C24
C23
C22
8
7
6
5
C9
C8
C7
C6
0
0
0
0 for SF, AF, BF and 1 for EF
0
0
4
3
2
1
C21
C20
C19
C18
4
3
2
1
C5
C4
C3
C2
0
C17
0
C1
11
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