
Operation and communication
2
0
2
0
-0
5
33
5.1.2.3
Side S
Side S specifies the side of the Data Matrix lane on which the control codes are present.
Meaning of Bits
5.1.2.4
Position/Lane
You can use the following table to draw conclusions on the current section in the reading win-
dow based on the feedback from the read head regarding Data Matrix tag
TAG
, No Lane
NL
,
No X Position
NP
, absolute X position
XP
and the Y position and angle
YPS/ANG
.
Meaning of Bits
5.1.3
Direction Decision Request Telegram
Response Telegram for Direction Decision
S1
S0
Meaning
0
0
No control code is present or found
Reserved
0
1
Control code to the right of the Data Matrix lane
1
0
Control code to the left of the Data Matrix lane
1
1
Not detectable
1
1. Control code laid on Data Matrix lane
No Data Matrix lane available
Table 5.8
Meaning of bits S1 and S0
TAG
NL
NP
XP
YPS/
ANG Meaning
0
0
0
+
1
1. Valid data present
+
Data Matrix lane available. Position and angle refer to the
Data Matrix lane.
0
1
0
+
+
Data Matrix lane available.
0
1
1
-
-
No evaluable objects exist.
1
-
0
+
+
Position on the basis of a Data Matrix tag, X position is
signed.
Table 5.9
Meaning of bits
Byte/
bit
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Function
Byte 1
Parity
1
1
1
0
LL
RL
A1
A0
Request
Byte 2
Parity
0
0
0
1
~LL
~RL
~A1
~A0
Checksum
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 1
Parity
0
CC2
A1
A0
CC1
WRN
NP
ERR
Byte 2
Parity
0
0
0
0
0
0
LL
RL
Byte 3
Parity
0
XOR
B1.6
...
B2.6
XOR
B1.5
...
B2.5
XOR
B1.4
...
B2.4
XOR
B1.3
...
B2.3
XOR
B1.2
...
B2.2
XOR
B1.1
...
B2.1
XOR
B1.0
...
B2.0