II - DCE FEL ČVUT v Praze

SIMATIC S7 Ex Analog Modules
Diagnostics of
analog output
modules
3-48
Table 3-26 provides an overview of the diagnostic messages of the analog
output module which can be parameterized. The enable is set in the
”diagnostics” parameter block (see Section 3.6.3 ).
Table 3-26 Diagnostic messages of analog output module
SM 332; AO 4 x 0/4...20 mA
Wire break 2)
Diagnostic message Effective range
of diagnostics
Incorrect parameters in module
Incorrect parameters in module
Module not parameterized
No internal auxiliary voltage
No external auxiliary voltage
Channel group
configurable
Fuse blown Module no
Time watchdog tripped
EPROM error 1)
RAM error 1)
CPU error 1)
1) The tests are conducted during start-up and on-line.
2 ) Wire break recognition at output values I > 100 A and output voltage > 12V
yes
no
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04