
118
KH 8384-5 EN
Parameter lists
DO FB:
RCAS_OUT_D (24)
Storage class D; read capability r
Discrete set point after applying the ramp function (value and status)
The RCAS_OUT_D value is provided to the fieldbus host system to perform back-
calculations in case of control mode changes or limited signals.
Note:
This parameter is only active in RCAS mode.
DO FB:
READBACK_D (16)
Storage class D; read capability r
Current discrete valve position
•
0: 0 %1: 100 %
•
2: Intermediate position (0.5 % < x < 99.5 %)
DO FB:
SHED_OPT (23)
Storage class S; read/write capability r/w; supported modes ALL
Behavior upon exceeding the monitoring time (see SHED_RCAS in the Resource Block)
Monitoring of the connection between fieldbus host system and DO Function Block in
RCAS mode. When the monitoring time has elapsed, DO Function Block switches from the
RCAS mode to the selected operating mode.
The action to be taken after the fault state ends is also determined.
•
[UNINITIALIZED]
•
NORMAL SHED_NORMAL RETURN · On failure of remote connection, change to next
possible mode until RCAS mode is restored.
•
NORMAL SHED_NO RETURN · On failure of remote connection, change to next
possible mode. The block remains in this mode.
•
SHED TO AUTO_NORMAL RETURN · On failure of remote connection, change to
AUTO mode until RCAS mode is restored.
•
SHED TO AUTO_NO RETURN · On failure of remote connection, change to AUTO
mode. No attempt is made to restore the mode and the block remains in AUTO mode.
•
SHED TO MANUAL_NORMAL RETURN · On failure of remote connection, change to
MAN mode until RCAS mode is restored.
•
SHED TO MANUAL_NO RETURN · On failure of remote connection, change to MAN
mode. No attempt is made to restore the mode and the block remains in MAN mode.
•
SHED TO RETAINED TARGET_ NORMAL RETURN · On failure of remote connection,
the block attempts to attain the retained target mode until RCAS mode is restored.
•
SHED TO RETAINED TARGET_NO RETURN · On failure of remote connection, the block
sets the target mode to the retained target mode.
Note:
This parameter is only active in RCAS mode in the DO Function Block.
If the value is set to UNINITIALIZED, the DO Function Block cannot be placed in the RCAS
mode.