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Siemens
Standard application AHU
CE1P3977en_02
Building Technologies
Detail pages: Inputs and outputs
01.02.2010
Parameter
Range
Function
Contact Function
−
NO
−
NC
Changes input from Normal open to Normal closed:
−
Normal open (logical 1 on input = TRUE in the
program).
−
Normal closed (logical 0 on input = TRUE in the
program).
Value selector
−
Hardware
−
Comm
−
And.
−
Or.
−
PreferedHW
−
PrefComm
Select valid input value for the application:
−
Value on hardware input.
−
Value from communications.
−
The input is 1, if the value on the hardware input
and the value from communications = 1. Alarm
triggers (if enabled), if one of the two values is in-
valid.
−
The input is 1, if the value on the hardware input
or the value from communications = 1. Alarm
triggers (if enabled), if one of the two values is in-
valid.
−
Value on hardware input has priority. The value
from communications assumed if invalid. Alarm
triggers (if enabled), if both values are invalid.
−
Value from communications has priority. The
value from hardware input assumed if invalid.
Alarm triggers (if enabled), if both values are in-
valid.
6.6.3 Special information
– Read: Levels 4 and 2.
– Write: Not writable.
Parameter
Range
Function
Value selector
−
Hardware
−
Comm
−
And
−
Or
−
PreferedHW
−
PrefComm
Displays valid input value for the application:
−
Value on hardware input.
−
Value from communications.
−
The input is 1, if the value on the hardware input
and the value from communications = 1. Alarm
triggers (if enabled), if one of the two values is
invalid.
−
The input is 1, if the value on the hardware input
or the value from communications = 1. Alarm
triggers (if enabled), if one of the two values is
invalid.
−
Value on hardware input has priority. The value
from communications assumed if invalid. Alarm
triggers (if enabled), if both values are invalid.
−
Value from communications has priority. The
value from hardware input assumed if invalid.
Alarm triggers (if enabled), if both values are in-
valid.
Value HW
Text abhängig von der
Present value for hardware.
Access level
Parameter
Basis Document Siemens Climatix Control System
BDCX.100820.01GB
Page 108