Behavior Of The Analog Modules Depending On The Position Of The Analog Output Value In The Value Range - Siemens SIMATIC ET 200X Manual

EM 144 AI 2 x RTD, response in the event of a wire break
If a wire break occurs on one of the EM 144 AI 2 x RTD expansion module's
channels, the measured values on the expansion module's other channel may be
corrupted. When this happens in S5 format, the overflow bit is set and the value
06E6 is loaded; in S7 format the value 7FFF
H
Effect of the value range for the analog output
The behavior of the expansion modules with analog outputs depends on where the
output values are in the value range. The following table indicates this:
Table 7-61 Behavior of the analog modules depending on the position of the analog output value in the
value range
Output value in
Rated range
Overrange/underrange
Overflow
Underflow
Before parameterization
or in the event of incor-
rect parameterization
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Output value in SIMATIC S
5/S7 format
Value from DP master
Value from DP master
0 signal
0 signal
0 signal
Technical Specifications
is loaded.
H
SF LED Diagnostic
data area of
the module
– –
– –
– –
– –
On* –
Interrupt
–
–
–
–
–
7-105