Configuration
Use the CFC editor to 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 Pcs7AnIn driver blocks (cyclic data, 4 to 20 mA), FbAnIn (HART variables)
and PiDr64 (acyclic data) in the same interrupt OB and startup OB (OB100) before the SitrLuHA
block in each case. The
AcyclData
output structure of the PiDr64 block is interconnected to
the input with the same name of the SitrLuHA block.
The
SlotHart
input receives the slot number of the Sitrans LU within the analog input module.
The
Feature
bit 2 must be used to configure whether communication with the module is by
means of the HART protocol. If HART communication is used, reading out of the module
configuration can be triggered in the WinCC faceplate. Otherwise, the device type of the
Sitrans LU (
DevType
input), the physical variable of the 4 to 20 mA signal (
PV_Meas0
input),
its unit (
PV_Unit0
input), and its scaling (
PV_OpScale
input) must be entered manually.
Note
Correct configuration of the
SlotHart
input is a mandatory requirement and cannot be
checked by the block.
Measuring ranges of the corresponding measured values are parameterized at the
PV/
SV_OpScale
inputs.
The SITRANS library contains a template for process tag types as an example with an
application scenario for the SitrLuHA block.
Example of a process tag type: see section Template of SitrLuHA (Page 801)
Note
The APL blocks ChkREAL (FC260) and SelST16 (FC369) that are not supplied with the
SITRANS Library are called internally by the SitrLuHA block. 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.
Note
The user text library "SitrLuHA_MeasVal" must be copied from the Sitrans Library to the PCS
7 project prior to the OS compilation. To do this, open the SITRANS Library from the Simatic
Manager using File -> Open... -> Libraries. Copy the "SitrLuHA_MeasVal" file from the library
(directory: Templates\Text Libraries) into a user text library folder created using the S7
program in your PCS 7 project.
Startup characteristics
Use the
Feature
Bit Setting the startup characteristics (Page 50) to define the startup
characteristics of this block.
The messages are suppressed after startup for the number of cycles set at
RunUpCyc
.
SITRANS LU HART
17.1 SitrLuHA
SITRANS Library for PCS 7
778
Function Manual, 05/2019, A5E35351976-11
Summary of Contents for SITRANS PCS 7
Page 12: ...Table of contents SITRANS Library for PCS 7 12 Function Manual 05 2019 A5E35351976 11 ...
Page 418: ...SITRANS P 10 2 SitraPDr SITRANS Library for PCS 7 418 Function Manual 05 2019 A5E35351976 11 ...
Page 850: ...Index SITRANS Library for PCS 7 850 Function Manual 05 2019 A5E35351976 11 ...