Digital modules
8.5 SM 326; DO 8 x DC 24V/2A PM
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
137
Diagnostic
message
Error detection
Possible causes of the
problem
Corrective measures
Parameter
assignment error
(with specification
of a consecutive
number)
General
Error in dynamic parameter
reassignment
Check the parameter
assignment in the user
program. Contact
SIMATIC Customer
Support if necessary
CRC signature error General
CRC signature error during
communication between the
CPU and the module has
occurred, for example, due to
electromagnetic interference
in excess, faults during sign-
of-life monitoring error or
standard program accesses
F-SM.
Eliminate the
interference
Assigned monitoring time
exceeded
Check the monitoring
time parameters
Timeout of safety
message frame
monitoring
General
Startup of the fail-safe signal
module
—
Note
Note that an inductive load connected to the DO channels can induce voltages due to
interference of a strong, magnetic field. This situation can result in the error message short
circuit.
Remedy:
Create a spatial separation of the inductive loads and shield the magnetic field.
Содержание Simatic S7-300
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