Samson 3730-4 - Page 66

POS_D* (47)
Storage class: – · Read capability (r)
Current position of the valve (discrete)
• 0 · Not initialized
• 1 · Closed (x < 0.5 %)
• 2 · Open (x > 99.5 %)
• 3 · Intermediate position
PV_SCALE (27)
Storage class: S · Read/write capability (r/w) · Supported modes: ALL
Range of the reference variable
RCAS_IN* (30)
Storage class: S · Read/write capability (r/w) · Supported modes: ALL
Setpoint with status: Reference variable w in RCAS mode
Provided by a supervisory host, e.g. PID Block or Master Class 1. Depending on mode of the Function
Block
Range defined in PV_SCALE
RCAS_OUT* (43)
Storage class: – · Read capability (r)
Setpoint with status: Reference variable w in RCAS mode
Provided to a supervisory host, e.g. PID Block or Master Class 1. Depending on mode of the Function
Block
Range defined in PV_SCALE
READBACK (28)
Storage class: – · Read capability (r)
Controlled variable (valve position) x in relation to travel range/angle of rotation (PV_SCALE) and
status of controlled variable
Range defined in PV_SCALE
SETP_DEVIATION (48)
Storage class: – · Read capability (r)
Setpoint deviation [%]
SIMULATE (51)
Storage class: – · Read/write capability (r/w) · Supported modes: ALL
Simulation
•
Simulates a value/status of READBACK
66 KH 8384-4 EN
AO Function Block, Slot 1 · Profile-specific parameters