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BRONKHORST FlowDDE, Инструкция по эксплуатации

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BRONKHORST

®

 

Page

 

18

   

 

 

 

 

FlowDDE

 

 

 

 

  

      

9.17.067

 

6

 

FLOWDDE

 

TECHNICAL

 

DETAILS

 

 

In

 

the

 

following

 

diagram,

 

the

 

communication

 

from

 

a

 

DDE

 

client

 

to

 

the

 

instrument

 

is

 

schematically

 

drawn.

 

The

 

FlowDDE

 

application

 

makes

 

use

 

of

 

the

 

Flowb32.dll

 

and

 

the

 

parameter

 

database.

 

 

 

 
 

A

 

DDE

 

client

 

communicates

 

to

 

FlowDDE

 

using

 

DDE

 

messages.

 

FlowDDE

 

uses

 

the

 

parameter

 

database

 

for

 

parameter

 

information

 

and

 

the

 

Flowb32.dll

 

to

 

perform

 

the

 

low

 

level

 

communication

 

to

 

the

 

FLOW

‐

BUS.

 

The

 

Flowb32.dll

 

has

 

methods

 

to

 

easily

 

send

 

or

 

request

 

a

 

parameter

 

value

 

to

 

a

 

certain

 

node,

 

process

 

and

 

parameter

 

and

 

to

 

get

 

the

 

answers.

 

From

 

the

 

calls

 

to

 

these

 

methods,

 

it

 

constructs

 

the

 

required

 

FLOW

‐

BUS

 

messages

 

in

 

the

 

binary

 

ProPar

 

protocol,

 

sends

 

these

 

messages

 

and

 

receives

 

and

 

interprets

 

the

 

answers

 

from

 

the

 

instruments.

 

Included

 

in

 

the

 

FlowDDE

 

installation

 

FlowDDE

 

application

DDE

 

client

 

Flowb32.dll

 

RS232/FLOW

‐

BUS

 

interface

 

or

 

multibus

 

instrument

 

FlowDDE

parameter

 

database

 

DDE

 

messages

ProPar

 

(binary)

 

calls

 

to

 

DLL

 

Содержание FlowDDE

Страница 1: ...ad this instruction manual carefully before installing and operating the instrument Not following the guidelines could result in personal injury and or damage to the equipment Head Office Nijverheidsstraat 1a NL 7261 AK Ruurlo The Netherlands Tel 31 573 458800 info bronkhorst com ...

Страница 2: ...cument is subject to change at any time without prior notification Bronkhorst reserves the right to modify or improve its products and modify the contents without being obliged to inform any particular persons or organizations The device specifications and the contents of the package may deviate from what is stated in this document Symbols Important information Discarding this information could ca...

Страница 3: ...RAMETER INFORMATION 8 4 OPERATION 10 4 1 BASIC COMMUNICATION TO INSTRUMENTS AND SERVING CLIENT APPLICATIONS 10 4 1 1 Communication settings 10 4 1 2 Open communication 11 4 1 3 Close communication 11 4 2 CONFIGURATION 11 4 3 SETTINGS 12 4 3 1 Poll time 12 4 3 2 System settings 12 4 3 3 Simulation mode 13 4 4 VIEW AND EDIT PARAMETERS 13 4 4 1 View parameters and values 13 4 4 2 Edit parameters 14 4...

Страница 4: ... 2 REFERENCES TO OTHER APPLICABLE DOCUMENTS Manuals and guides for digital instruments are modular General instructions give information about the functioning and installation of instruments Operational instructions explain the use of the digital instruments features and parameters Fieldbus specific information explains the installation and use of the fieldbus installed on the instrument 1 2 1 Man...

Страница 5: ...cause other problems as well See Microsoft s KB198098 To avoid communication errors it is advised to use a serial RS232 port with hardware buffer overrun detection Few USB RS232 converters have this feature but e g the Digitus part no DA 70156 has 1 5 INSTALLATION AND START UP Follow on screen instructions when installing FlowDDE FlowDDE will be installed in C Program Files Bronkhorst FlowDDE32 St...

Страница 6: ... a RS232 connector or as an integral 14TE module of your E 7000 or E 8000 readout and control system The converter offers communication with a baud rate up to 38400 baud Communication software support is available Communication settings are 38400 n 8 1 2 1 1 D connector for RS232 The female RS232 x sub miniature 9 pin D connector has the following pin configuration Pin number Description 1 2 3 4 5...

Страница 7: ...nt other instruments connected to the FLOW BUS can be communicated with as well RS232 communication is possible by 9 pin Sub D connector non IP65 instruments e g EL FLOW 8 pin DIN connector IP65 instruments e g CORI FLOW For the exact connections please advise your hook up diagram 2 2 1 Applications e g EL FLOW FLOW mass flow meter controller Power Supply Instrument supplied through the D sub DB 9...

Страница 8: ...a string with a length of X bytes 0 means no info required not a string type parameter Min Minimum value of parameter allowed when parameter is read written The value will be checked on this limit error when out of limit Max Maximum value of parameter allowed when parameter is read written The value will be checked on this limit error when out of limit Read Indication if parameter is allowed to be...

Страница 9: ...age will always be accepted regardless the true node address of the instrument on the bus The process can be found in the parameter table or has to be determined when nothing is filled in In that case the process number most often is 1 but on devices with e g multiple sensor channels the process will be 1 for the first channel 2 for the second and so on up to 32 On these modules also process 33 65...

Страница 10: ... 4 1 1 Communication settings Before communication to the instrument s can be made the communication settings have to be correctly configured Open the communication settings from the menu Communication Communication settings or by pressing F2 The window shown at the right hand side pops up At Interface the COM port and the baud rate can be selected For most interfaces the default baud rate is 3840...

Страница 11: ...d after each poll so clients don t need to actively refresh these before using From now on FlowDDE is ready for any client FlowDDE can be minimized and acts as silently as a server until the communication is closed 4 1 3 Close communication Communication to the instrument can be stopped by from the menu Communication Close communication or F4 Polling is stopped all DDE items are terminated and cli...

Страница 12: ...ged at Server Poll time The window at the right hand side pops up It contains three settings Poll time the time between two poll requests Batch of channels the number of channels that are polled at once The next poll time the next batch is polled This prevents high CPU loads due to many channels being polled but reduces the actual poll time per channel as the total number of channels is divided by...

Страница 13: ...writes all command to the instrument When the instrument returns an error that error is shown 4 3 3 Simulation mode In simulation mode only DDE communication with a virtual system stored in the database is possible This can be used when you don t have a FLOW BUS system available Parameter values can be read and write through DDE by your client Only controllers are simulated in this mode Sending a ...

Страница 14: ... the parameter number or close the window and answer the question by Yes Removing a parameter from DDE means that client applications cannot reach it and FlowDDE does not read the parameter value from the instrument To remove a parameter from DDE uncheck the Available at DDE checkbox By default all parameters are available checked Changing parameter information cannot be undone other than by reins...

Страница 15: ... well Copy a link from any application e g copy a cell from Excel In the test form press Paste Any change in the application s field result in the parameter value in FlowDDE to be updated Note that when the communication is closed all links will be terminated and will not be restored when the communication is opened again Disable standard polling temporarily stops FlowDDE from polling the selected...

Страница 16: ...of all parameters in group Y of channel X C 0 P 0 1 read values of all parameters of all channels Other special actions can be triggered by P 0 C 0 P 0 2 open a log file read all parameter values on all channels and close the file C 0 P 0 3 bring the main window to the front C 0 P 0 4 bring the FLOW BUS configuration window to the front C 0 P 0 6 bring the Poll time window to the front C 0 P 0 7 b...

Страница 17: ...DDE Server ComStatus Status of FlowDDE Idle Normal polling Simulation Scanning FLOW BUS Server OpenCom Communication status command 0 close 1 open Server MaxChan Maximum channel number in FLOW BUS configuration Server MaxNode Maximum node address in FLOW BUS system Server MaxPar Maximum parameter number in FlowDDE database Server SelChan Select channel for changing polling mode 0 all channels Serv...

Страница 18: ...2 dll to perform the low level communication to the FLOW BUS The Flowb32 dll has methods to easily send or request a parameter value to a certain node process and parameter and to get the answers From the calls to these methods it constructs the required FLOW BUS messages in the binary ProPar protocol sends these messages and receives and interprets the answers from the instruments Included in the...

Страница 19: ...sist you selecting the right product for your application Contact sales by e mail sales bronkhorst com For after sales questions our Customer Service Department is available with help and guidance To contact CSD by e mail support bronkhorst com No matter the time zone our experts within the Support Group are available to answer your request immediately or ensure appropriate further action Our expe...

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