Burkert Type 8642 - Manual (Page 39)

8642/142 791 - 37
english
5.2.3.5 Description of the block parameters of the function block
READBACK_D This parameter indicates the position of the valve and
the sensors
Bit
Not initialised
closed
open
moving
State sensor 1
Short circuit sensor 1
Lead break senor 1
State sensor 2
Short circuit sensor 2
Lead break sensor 2
1 = active
0 = inactive
SP_D Setpoint of any discrete block.
Bit 0 in the value indicates the valve position.
OUT_D This paramter is the process variable of the discrete
output block in AUTO, MAN and RCas mode and is the
value specified by the operator/engineer in LO.
Bit 0 in the value indicates the valve position.
RCAS_IN_D Target Setpoint and status provided by a supervisory
Host to the discrete output block.
Bit 0 in the value indicates the valve position.
RCAS_OUT_D Function Block Setpoint and status provided to a
supervisiory Host for monitoring/back calculation and to
allow action to be taken under limited conditions or mode
change.
CHANNEL Reference to the active Transducer Block which
provides the actual value to the valve. The number is the
same as in the one of this Transducer Block in the
Composite_Directory_Entry in the Directory of the
Device Management.
1 0 7 6 5 4 3 2
0 0
0 1
1 0
1 1