With Hart Dynamic Variables On Profibus Dp/V1 750-333 And 750-833; Table 49: Operating Mode For Profibus Dp/V1 - WAGO I/O-SYSTEM 750 Manual

70 Commissioning
9.2 With HART Dynamic Variables on PROFIBUS DP/V1
750-333 and 750-833
When connecting to the PROFIBUS DP/V1 Coupler 750-333 or Controller
750-833, there is a choice of four operating modes, "2AI + 1, 2, 3, 4 HART
variables per channel", in which the incorporation of one, two, three or four HART
variables per channel in the cyclic process image can be set up for the analog
values.

Table 49: Operating Mode for PROFIBUS DP/V1

2 AI + 1 HART variable per Channel
2 AI + 2 HART variables per Channel
2 AI + 3 HART variables per Channel
2 AI + 4 HART variables per Channel
Consider the maximum number of modules!
Because of the process data capacity of the HART I/O module, please be sure to
take into account the corresponding maximum number of modules that can be
connected when using a WAGO PROFIBUS DP/V1 Coupler 750-333 or
Controller 750-833. You can find this number in the table "Compatibility List".
With PROFIBUS, it is possible to evaluate and process further information in
addition to the actual measured signal, which is output in the main variables. This
additional information is then output accordingly by means of the HART dynamic
variables.
Some HART field devices (sensors) provide such additional information, an
example being a pressure transducer, which depending on the type of
measurement also provides such data as the sensor or electronics temperature
in the dynamic variables along with the actual process value (e.g., pressure, flow
or level).
Additional Information for the Application
You can read a detailed description with a clear application example for the
PROFIBUS connection using HART dynamic variables in a superimposed
CODESYS or Siemens controller in the appropriate application note, which
describes the use of HART I/O modules on the PROFIBUS DP/V1 coupler. You
will find this application note on the WAGO website at:
www.wago.com → Support → Additional documentation and information on
automation products → Application Notes
Manual
Version 1.4.0
WAGO-I/O-SYSTEM 750
750-484 2AI 4-20mA HART Ex i