Analog modules
9.3 SM 336; F-AI 6 x 0/4 ... 20 mA HART
Fail-safe signal modules
258
Installation and Operating Manual, 01/2010, A5E00085586-10
Possible diagnostic messages
The following table provides an overview of the diagnostic messages for SM 336;
F-AI 6 x 0/4 ... 20 mA HART.
Diagnostic messages are assigned either to a channel or to the entire module. Some
diagnostic messages occur only in certain applications.
Table 9- 24 Diagnostic messages of SM 336; F-AI 6 x 0/4 ... 20 mA HART
Diagnostic message
Signaled in the
application
Effective
range of
diagnostics
Assigna
ble
No external auxiliary voltage
3 – 9
Module
No
Parameter assignment missing
3 – 9
Module
No
Incorrect module parameters
3 – 9
Module
No
Time monitoring activated
3 – 9
Module
No
Internal supply voltage of the module failed
3 – 9
Module
No
Processor failure
3 – 9
Module
No
EPROM error
3 – 9
Module
No
Communication error
3 – 9
Module
No
RAM error
3 – 9
Module
No
ADC/DAC error
3 – 9
Module
No
Discrepancy error
5 – 6
Channel
Yes
Short circuit of sensor supply to L+ *
3 – 9
Channel
No
Short circuit to M (test occurs cyclically)
3 – 9
Channel
No
Wire break **
3 – 9
Channel
Yes
Value is above the overrange
3 – 9
Channel
No
Value is below the underrange ***
3 – 9
Channel
No
HART: Primary variable outside the limits
3 – 9
Channel
Yes
HART: Non-primary variable outside the limits
3 – 9
Channel
Yes
HART: Analog output current saturated
3 – 9
Channel
Yes
HART: Analog output current specified
3 – 9
Channel
Yes
HART: Further status information available
3 – 9
Channel
Yes
HART: Configuration has changed
3 – 9
Channel
Yes
Malfunction of HART device
3 – 9
Channel
Yes
HART parameter assignment error
3 – 9
Channel
No
HART communication error
3 – 9
Channel
No
* is detected only during startup of the module
** Wire break can be signaled for 0 to 20 mA and for 4 to 20 mA if "wire break diagnostics" is
configured.
*** Underrange can be signaled only with 4 to 20 mA and wire break diagnostics deselected.
See also chapter " HART for safety-oriented applications (Page 283) "
