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Siemens
TX-I/O PROFINET BIM V1.0
CM110564en_02
Building Technologies
Parameters
23.09.2010
4.5
Binary Output (Bistable)
BO_BISTABIL
(SIMATIC Manager Hardware catalog)
Parameter for converting a binary process value to the module-specific switching
value.
Unlike the OnOff binary output function, the following points apply to this output:
The behavior can be defined if PowerDown (AC) is detected. In this regard,
bistable relays are used that retain their status during PowerDown.
The activation of the backup value can be delayed if a MasterDown status is
detected.
4.5.1
Backup Mode
Function for control of the behavior of the function when changing to the
"MasterDown" status.
Possible values
Description
NO
Process value = INACTIVE, 0 (Off)
VALUE
Specific value of the parameter [BOBackupValue]
KEEP
Save the last active process value
4.5.2
BO Backup Value
Parameter – type [BinaryValueEnum] – that represents the backup value and
becomes valid in the following cases:
a change in status to "MasterDown"
and
the parameter [BackupMode] = VALUE
Possible values
Description
ACTIVE
Binary output is active.
INACTIVE
Binary output is inactive.
4.5.3
BackupDelay
Parameter for defining a delay upon activation of a backup value (according to the
[BackupMode]) after detection of a MasterDown.
Value range
Unit
0...65535 0.1
s
4.5.4
PowerDownModeAC24V
Parameter for defining the behavior following the detection of a MasterDown.
Possible values
Description
NO
Process value = INACTIVE, 0 (Off)
VALUE
Specific value of the parameter [BOBackupValue]
KEEP
Save the last active process value
Representation
Definition,
addition
Definition,
addition
Definition,
addition
Definition,
addition
Definition,
addition
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