Test/Commissioning/
Diagnostics
70
06/99 AWB 2700-1364 GB
States of basic unit and local expansion
modules
This diagnostic byte provides information on the
basic unit and any local expansion modules
connected to it. The information is the same as
byte 0 of the diagnostic status word and can
therefore be found in Table 11.
Structure
Scan instruction
LD AT %ISB0.0.0.0:BYTE;
or
LD AT %IS0.0.0.0.1:BOOL;
.
.
.
LD AT %IS0.0.0.0.7:BOOL;
Display in Sucosoft S 40
see under
Status of analog inputs in the basic unit
You can set analog inputs AI0 and AI1 (channels 2
and 3) to input signals of between 4 and 20 mA. If the
input current drops below 4 mA, a wire break signal
is generated. For each of the two inputs is available
a message bit which is set if the current drops below
4 mA. The input value is then set to the value 205. If
the current rises above 4 mA, the bit is set to the “0”
signal again.
Bit 7
6
5
4
3
2
1
0
DAC
DBM
DMC
DLK
DLS
DDK
DDS
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