Configuration
In the CFC editor, install the block in a cyclic interrupt OB (OB30 to OB38). The block is also
installed automatically in the startup OB (OB 100). Moreover, to connect the I/O signals, it is
imperative to call the driver blocks
Pcs7AnIn
and
FbAnIn
(cyclic data) as well as PiDr64
(acyclic data) in the same interrupt OB and startup OB (OB100) before the SitrFC43 block in
each case. The output structure
AcyclData
of the PiDr64 block is interconnected to the input
with the same name of the SiFC43Dr block. The
SxRdReq
,
SxWrReq
and
Para
output
structures of the SiFC43Dr block are interconnected to the
RdReq
,
WrReq
and
Para
inputs of
the SitrFC43 block. The SiFC43Dr block must be called after the PiDr64 and before the
SitrFC43 block.
Feature
Bit 7 = TRUE means that the block takes over the message limits when reading the
configuration data from the device. The maximum and minimum values for the alarm and
warning limits of the process values are configured at the
LimPV/SV/TV/QV_OpScale
inputs,
or read out from the device if
Feature
bit 7 is set for synchronization of the message
configuration with the device.
Measuring ranges of the corresponding measured values are configured at the
PV/SV/TV/
QV_OpScale
inputs.
Dosing function
If dosing is used, the following must be configured:
1. Configuration of a dosing mode in PDM
2. Setting of
Feature
bit 14 (activate dosing) to TRUE
3. Supply of
SV
input with the current dosing quantity via a 4 to 20 mA input
4. Supply of
FbkDosVlv
input with the current feedback of the dosing valve via a digital input
Note
The dosing valve requires a binary feedback of its current state. The feedback of the dosing
valve must be interconnected to the
FbkDosVlv
input so that the new dosing state is read out
by means of acyclic communication in the event of a change. Start of dosing is also transmitted
to the device by means of acyclic communication. Since, in contrast to cyclic data transmission,
this can take several cycles, the FC430 is not suitable for applications in which dosing
operations have to be started in rapid succession.
Note
The SitrFC43 block contains two templates for process tag types with or without dosing function
in the SITRANS Library as an example with an application of this block with or without
dosing; Template of SitrFC43 (Page 508).
Note
The APL blocks ChkREAL (FC260) and SelST16 (FC369) that are not supplied with the
SITRANS Library are called internally by the SitrFC43block. If not yet installed in your project,
copy both blocks from the APL-Library to your project before you download the project to the
PLC.
SITRANS FC430
12.1 SitrFC43
SITRANS Library for PCS 7
460
Function Manual, 05/2019, A5E35351976-11
Summary of Contents for SITRANS PCS 7
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