Modes
54
MA 255
i
Le
u
ze electronic
If PLC data is provided and transferred without a state change of the CTB bit, it goes directly
to the RS 232 interface with the set telegram data length. Incomplete (incl. data frame) or
faulty telegrams can cause error messages in the connected device!
Examples for the activation of a Leuze device
In the data part (starting at byte 2) of the telegram to the gateway, a "+" (ASCII) is sent for
activation.
This means that the hex value "2B" (corresponds to a "+") is to be entered in control or output
byte 2. To deactivate the reading gate, a "2D" (hex) must be used instead (corresponds to
a "-" ASCII).
7
6
5
4
3
2
1
0
ND
Address 4
Address 3
Address 2
Address 1
Address 0
Broadcast
Command
mode
Control byte 0
CTB
SFB
R-ACK
Control byte 1
Data byte 1
Data
Data byte 2
…
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
Output byte 0
0
0
0
0
0
0
0
0
Output byte 1
0
0
0
0
0
0
B
2
Output byte 2
0
0
0
0
0
0
0
0
Output byte 3
