Siemens ET 200S - Page 422

Analog Electronic Modules
12-66
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Temperature Coefficient
The correction factor for the temperature coefficient ( value) specifies how much
the resistance of a certain material changes when the temperature is raised by
1C.
The temperature coefficient depends on the chemical composition of the material.
Only one value is used in Europe for each type of sensor (default value).
Additional values enable you to make a sensor-specific setting for the temperature
coefficient, therefore ensuring more accuracy.
Parameters for
 2AO U Standard, 2AO U High Feature analog electronic module
 2AO I Standard, 2AO I High Feature analog electronic module
Table 12-76Parameters for Analog Output Modules U, I
2AO U
Standard,
2AO U High
Feature
2AO I
Standard,
2AO I High
Feature
Value Range Default Applicability
Group diagnosis (parameter
assignment error, internal
error)
 Disable
 Enable
Disable Module
Diagnostics:
Short-circuit
to M
–––  Disable
 Enable
Disable Channel
––– Diagnostics:
Wire break
 Disable
 Enable
Disable Channel
Reaction to
CPU-/Master-STOP
 Output de-energized
 Substitute a value
 Keep last value
Output
de-energized
Module
Type/range
of output
–––  Deactivated
 1 to 5 V
 " 10 V
"10 V Channel
––– Type/range
of output
 Deactivated
 4 to 20 mA
 " 20 mA
4 to 20 mA Channel
Substitute value
1
0 to 65535 (value range must
be inside the rated range)
"10 V/"20 V:
0 V
4 to 20 mA: 4 mA
1 to 5 V: 1 V
Channel
1
If there is no voltage going to the IM but the supply to the analog output modules continues, the
parameterized substitute values are output. Substitute values must be within the nominal range. You can
assign as parameters values from –27648 to +27648 (in the case of parameter assignment by means of
the device database file).