Siemens 505-2557 User Manual
Advanced Function Programming
3-19
SIMATIC 505–2557 Installation and Operation Guide
3.5
Additional Information about Each Function
There are default values for every function that is supported. If no data is
transferred to the module and the enable bits for a function are set and
written to the module, then the default values will be used. See Table 3-8.
transferred to the module and the enable bits for a function are set and
written to the module, then the default values will be used. See Table 3-8.
NOTE: No matter what functions are enabled, the actual hardware data
from the I/O channel is always present in WX33 – WX48.
from the I/O channel is always present in WX33 – WX48.
Table 3-8
Default Function Values
Functions Enabled
Low Default Value
High Default Value
Alarm setpoints
1000
31,000
Scaling engineering units
0
32,000
Offset mode 4–20 mA
6400
32,000
Filtering time constants
250 msec
Averaging
20 averages
Peak hold
0
0
Valley hold
0
0
Table 3-9
Default Function Values for SIMATIC 505–2557
Functions Enabled
Low Default Value
High Default Value
Alarm setpoints
50
200
Scaling engineering units
0
100
Filtering time constants
250 msec
Averaging
20 averages
Peak hold
0
0
Valley hold
0
0
Default Values