Samson foundation 3787, Mounting And Operating Instructions, Page: 62 / 96

RCAS_OUT D
Index: 28
Access:
r
Shows the analog reference variable (value and status) after ramping.
This value is made available to the fieldbus host system to perform back calculations
when the operating mode changes or with limited signals.
Note: This parameter is only active in RCAS mode.
READBACK D
Index: 16
Access:
r
Shows current valve stem position. The value is calculated from
FINAL_POSITION_VALUE of the associated Transducer Block. The unit used is taken
over by the XD_SCALE parameter group.
SHED_OPT
S
Index: 27
Access:
r, w
Option:
Default:
Used to select the action to be taken when the monitoring time is exceeded (see
SHED_RCAS in Resource Block) during the checking of the link between the fieldbus
host system and the AO Block in RCAS mode. After the monitoring time has elapsed,
the AO Block changes from RCAS mode to the mode selected here. The action to be
taken after the fault state is completed is likewise determined.
Uninitialized
NormalShed_NormalReturn:
Changes to next possible mode, after leaving the error condition,
returns to RCAS mode.
NormalShed_NoReturn:
Changes to next possible mode, after leaving the error condition,
the block remains in this mode.
ShedToAuto_NormalReturn
Changes to AUTO mode, after leaving the error condition,
returns to RCAS mode.
ShedToAuto_NoReturn:
Changes to AUTO mode, after leaving the error condition,
the block remains in AUTO mode.
ShedToManual_NormalReturn:
Changes to MAN mode, after leaving the error condition,
returns to RCAS mode.
ShedToManual_NoReturn:
Changes to MAN mode, after leaving the error condition,
the block remains in MAN mode.
ShedToRetainedTarget_NormalReturn:
Change to next possible mode, after leaving the error condition,
returns to RCAS mode.
ShedToRetainedTarget_NoReturn:
Change to next possible mode, after leaving the error condition,
the block remains in this mode.
Uninitialized
Note:
This parameter is only active in the AO Block in the RCAS mode. If it is set to
"Uninitialized", the AO Block cannot be put into the RCAS mode.
62
EB 8383-1 EN
Parameter description