Contamination And Error Signal Output - Leuze lumiflex Scan Connecting And Operating Instructions

The entire memory area of the PLC is availabe to the user program, with the exception
of the variable memory VB0 ... VB50 and the marker bit M0.0.
user
program
Fig. 4:
3.7

Contamination and Error Signal Output

This pnp output normally carries +24V DC. In case of a weak receiver signal caused by
contamination or misalignment, or in case of a fault, this output is switched to high
resistance. The output is short-circuit-proof and can carry up to 70 mA.
10
subprogram
0
initialization
VB16
VB20
read access
Software module for data acceptance by the Siemens Simatic S7/200
data buffer
header
usable
write access
data
CRC
SCAN
port 0
interrupt-
routine 1
interrupt-
routine 0
determine length
of data packet