AUMA AUMATIC AC 01.2 Manual page 27

Actuator controls
AC 01.2/ACExC 01.2 Foundation Fieldbus
Information
Table 3: CHANNEL parameter settings for Analog Output function block (AO)
CHANNEL Value Used Trans-
parameter ducer Block
Ch not 0 -
used
Ch PTB 1 PTB
setpoint po-
sition
Ch PTB 3 PTB
speed
Ch AOTB 20 AOTB
Ana-
log_Out 1
Ch AOTB 21 AOTB
Ana-
log_Out 2
8. Check/ perform configuration of the respective transducer block (refer to section
Positioner Transducer Block (PTB) or Analog Output Transducer Block (AOTB)).
'Ch PTB setpoint position' channel can only be selected once and excludes the use
of 'Ch PTB operation commands [8 bit]' as well as 'Ch DOTB fieldbus OPEN', 'Ch
DOTB fieldbus CLOSE' and 'Ch DOTB fieldbus STOP' channels of the DO.
Explanation
Not used
(factory setting)
Fieldbus setpoint position
Reserved for future extensions
Analog_Out 1 (Verify/perform
further settings in AOTB para-
meter CFG_AOUT_1)
Analog_Out 2 (Verify/perform
further settings in AOTB para-
meter CFG_AOUT_2)
Discrete Output function block (DO)
The DO receives an analogue signal from an upstream block and passes it on either
as operation command to the Positioner Transducer Block (PTB) or as general binary
signal to the Discrete Output Transducer Block (DOTB). The main functions of the
DO function block comprise:
Simulation
Actions upon deviations of upstream blocks
Signal inversion
Feedback signal via backward path (BKCAL_OUT_D)
Figure 14: Discrete Output function block (DO)
The DO also performs bi-directional signal processing:
Main function:
Transmission of a binary value from CAS_IN_D input via OUT_D output to PTB or
DOTB (forward direction, controlled via CHANNEL parameter).
Secondary function:
Feedback signal to the upstream function block via BKCAL_OUT_D output (backward
direction). The contents of this feedback signal depend on the channel selected
AO.READBACK parameter
Value and status:
PTB.PRIMARY_VALUE_ACTUAL_POSITION
Value and status:
PTB.FINAL_VALUE_TARGET_SPEED
Value and status:
AOTB.FINAL_VALUE_ANALOG_OUT_1
Value and status:
AOTB.FINAL_VALUE_ANALOG_OUT_2
Commissioning
27