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Configuration and Use Manual 183
Model 2700 PROFIBUS Block Parameters
Status Bytes Block ParametersDiagnostic BytesProLink
37 IN_CHANNEL
(DD Name: AO IN Channel)
Reference to the active
Transducer Block and its
parameter that provides the
actual position of the final
control element.
SIMPLE Unsigned16 2 S --- R/W NA R-2297
38 OUT_CHANNEL
(DD Name: AO OUT Channel)
Reference to the active
Transducer Block and its
parameter that provides the
position value for the final
control element.
SIMPLE Unsigned16 2 S ---- R/W NA R-2299 (only
units)
39 FSAFE_TIME
(DD Name: AO Fail Safe Time)
Time in seconds from
detection of failure of the
actual used set point (SP =
BAD or
RCAS_IN <> GOOD) to the
action of the block if the
condition still exists.
SIMPLE Float 4 S 0 R/W NA NA
40 FSAFE_TYPE
(DD Name: AO Fail Safe Type)
Defines reaction of the
device, if a failure of the
actual used set point is still
detected after FSAFE_TIME
or if the status of actual used
set point is Initiate Fail
Safe.
SIMPLE Unsigned8 1 S 2 R/W 0: value FSAFE_VALUE
is used as set point
status of OUT =
UNCERTA–N –
Substitute Value
1: use last valid set point
status of OUT =
UNCERTA–N – Last
usable Value
or B–D – No
communication, no LUV
2: actuator goes to
fail-safe position defined
by ACTUATOR_ACTION
(only
useful for actuators with
spring return)
status of OUT = B–D –
non specific
NA
41 FSAFE_VALUE
(DD Name: AO Fail Safe
Value)
Set point used if
FSAFE_TYPE = 1 and
FSAFE is activated.
SIMPLE Float 4 S 0 R/W NA NA
42 RESERVED
43 RESERVED
44 RESERVED
45 RESERVED
46 RESERVED
47 POS_D
(DD Name: AO POS_D)
The current position of the
valve
RECORD 102 2 D --- R 0: not initialized
1: closed
2: opened
3: intermediate
NA
48 RESERVED
49 CHECK_BACK
(DD Name: AO Check Back)
Detailed information of the
device, bitwise coded. More
than one message
possible at once.
SIMPLE Octet String 3 D ----- R NA NA
50 CHECK_BACK_MASK
(DD Name: AO Check Back
Mask)
Definition of supported
CHECK_BACK information
bits.
SIMPLE OctetString 3 Cst --- R 0: not supported
1: supported
NA
51 SIMULATE
(DD Name: AO Simulate)
For commissioning and
maintenance reasons, it is
possible to simulate the
READBACK by defining the
value and the status.
RECORD DS-50 6 S Disabl
ed
R/W NA NA
52 INCREASE_CLOSE
(DD Name: AO Increase
Close)
Direction of positioner in
mode Rcas and Auto
SIMPLE Unsigned8 1 S 0 R/W 0: rising (increasing of
set point input results in
OPENING of the valve)
1: falling (increasing of
set point input results in
CLOSING of the valve)
NA
53 OUT
(DD Name: AO Out)
This parameter is the process
variable of the AO Block in
engineering units in AUTO
mode and is the value
specified by the operator in
Manual mode.
RECORD 101 5 D ---- R/W
(Can
be
written
only in
Manual
Mode)
NA NA
54 OUT_SCALE
(DD Name: AO Out Scale)
Scale of the Process
Variable.
RECORD DS-36 11 S --- R/W NA NA
55 RESERVED
56 RESERVED
57 RESERVED
58 RESERVED
59 RESERVED
60 RESERVED
Table F-15 AO function block parameters (continued)
Index Parameter Mnemonic Definition Message
Ty pe
Data Type/
Structure
Size Store
/Rate
(HZ)
Default
Value
Access Enumerated List of
Values / Range
Modbus
Register / Coil