Page 16 Instruction manual Parker X-Flow FM-1407 Rev - 11/2021
Examples of DDE client applications: FlowPlot, FlowView, MS-Office®, LabView®, Intouch®, Wizcon®.
The FlowDDE server also offers a lot of test facilities and user adjustable settings for efficient
communication with the connected flow controller.
How to setup a DDE link with FlowDDE is described in the help-file of the FlowDDE application.
Programming examples are available for making applications in: Visual Basic®, LabView® and Excel®.
FlowDDE parameter numbers:
Reading/changing parameter values via FlowDDE offers the user a different interface to the instrument.
Besides the application name: ‘FlowDDE’ there is only need of:
•
topic, used for channel number: ‘C(X)’
•
item, used for parameter number: ‘P(Y)’
A DDE-parameter number is a unique number in a special FlowDDE instruments/parameter database
and not the same as the parameter number from the process on an instrument.
Node-address and process number will be translated by FlowDDE to a channel number.
FlowDDE and other Parker X-Flow™ applications are available from the factory.
A special RS232 cable (7.03.366) can be ordered separately. It consists of a T-part with 1
male and 1 female sub-D 9 connector on one instrument-side and a normal female sub-D 9
connector on the side of the computer. By means of this cable it is possible to offer RS232
communication and still be able to connect power-supply and analog interface through the
(analog) sub-D 9 connector.
3.5 Modbus® RS485 operation
This section is limited to the description of the interface between the Modbus® Mass Flow Controller
with a master device. It will explain how to install an X-Flow™ instrument to your Modbus® system.
The implementation of the Modbus® interface is based on the following standards:
[1] MODBUS® Application Protocol Specification V1.1b, December 28, 2006
[2] MODBUS® over Serial Line specification and implementation guide V1.02
There is no mutual communication between Modbus® slaves, only between master and slave.
More detailed information about Modbus® can be found at
website of the (local) Modbus® organization of your country (when available).
X-Flow
FlowDDE
server
Application 1
Application 2
Application n
RS232
DDE-link
DDE-link
DDE-link
Windows based Personal Computer
Instrument
Summary of Contents for X-Flow FM-1407
Page 1: ...11 FM 1407...
