Data Exchange with the SM 335
3-17
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
3.3.1 SM 335 static parameters
The static parameters can only be modified via HW Config.
Data Record 0
Data record 0 of the SM 335 contains static parameters (see Table 3-10)
Table 3-10 SM 335 parameters in Data Record 0
Byte
Content Default
0 Input and output diagnostics 00
H
1 Reserved 00
H
Diagnostics
The “Input and output diagnostics” parameter is used to specify in HW Config
which analog inputs and outputs are to trigger a diagnostic interrupt in the event of
an error.
76543210
Analog input CH0
Analog input CH1
Analog input CH2
Analog input CH3
Analog output CH3
Analog output CH2
Analog output CH1
Analog output CH0
= ’1’: Diagnostic interrupt enabled
= ’0’: Diagnostic interrupt disabled
= ’1’: Diagnostic interrupt enabled
= ’0’: Diagnostic interrupt disabled
Fig. 3-2 Meaning of the bits in the “input and output diagnostics” byte
If the diagnostics for inputs are enabled, the SM 335 checks for common-mode
errors and measuring range violations.
When you enable diagnostics for the outputs, the SM 335 executes a short-circuit
test on the outputs.
To Next Page
Loading...
