Pentium 166 mh or faster processor with CD-ROM drive. At least one serial (RS232) port for attaching the MOD I/O

Transcription

1 Introduction This document details the connection of the MOD I/O PLC/DCS Interface to Intellution * Fix32 or ifix using the MB1 Modicon Modbus driver. The MOD I/O must be attached directly to the computer running Fix via an RS232 cable. System Requirements Pentium 166 mh or faster processor with CD-ROM drive Windows NT 4.0 or higher At least one serial (RS232) port for attaching the MOD I/O MOD I/O PLC/DCS Interface Intellution Fix32 or ifix Intellution MB1 Modicon Modbus driver Installing the Hach MOD I/O Module PLC/DCS Interface Attach one end of the 9-pin cable (included with the MOD I/O) to the RS232 port located on the back of the MOD I/O Module. Attach the opposite end of the cable to the computer serial port (typically marked COM1 or COM2) on the computer. Connect power to the MOD I/O by plugging the supplied ac adapter into the power jack on the MOD I/O and then into an appropriate electrical socket. Refer to the Hach MOD I/O Manual (Cat. No ) for MOD I/O installation and configuration details, and for register configuration information. Installing the Modbus Driver Install the MB1 Modicon Modbus v6.10c driver from the Intellution I/O Drivers and OPC Servers CD or from the Intellution web site ( Version 6.10c of the MB1 Modicon Modbus driver was used in this example. * Intellution, ifix, and Fix32 are trademarks or registered trademarks of the Intellution Corporation. Page 1

2 Establishing the ifix System Configuration 1. Start the SCU (System Configuration Utility) by clicking Start, Programs, ifix, System Configuration. The configuration screen with the tool box is shown: 2. Click on the SCADA button in the red toolbox. 3. Click on the I/O Driver Name (of the driver installed earlier). For this example, select MB1 Modicon Modbus v6.10c and click OK. The SCADA configuration dialog box appears: Page 2

3 4. Click the Add button, then the Configure button. The MB1 Driver Configurator dialog box appears: Configuring the MB1 Driver 1. Click on the Channel 1 button and type in a device name (MOD1 for this example). 2. Enter a description (Modbus to MODIO for this example). 3. Enter 1 as the Primary Station. Be sure to delete the dash (-) from the primary station field. The completed dialog box is shown following Step Click on the Setup button. The Channel 1 Communication Settings dialog box appears: Page 3

4 5. Configure the Channel 1 Communication Settings as shown for the default MOD I/O settings. If the MOD I/O communication settings are different from the default or if a port other than COM 1 is being used, make the appropriate changes. 6. Click OK to close the dialog box. The MB1 Driver Configurator Dialog Box appears. 7. Click in the empty white cell of I/O Block1, Column Start to activate the Poll Record Edit dialog box: 8. Edit the Poll Record Edit dialog as shown to access the floating point value of Sensor Number 1, Measurement Number 1 (a Hach 1720D Turbidimeter was used in this example). Note: See the MOD I/O Manual (Cat. No ) for a detailed description of the register structure of the MOD I/O. 9. Enter the Start Address and the Length, then select the Float Data Type. The End Address should automatically increment to one more than the Start Address. Page 4

5 10. Click OK after editing the Poll Record Edit dialog box. The MB1 Driver Configurator dialog box appears: 11. Click File, Save As from the MB1 Driver Configurator menu bar. The Save As dialog box appears: 12. Make sure the file name is FIX.MB1 and click OK. 13. Click File, Exit from the MB1 Driver Configurator menu bar to close the dialog box. Page 5

6 14. Click OK on the SCADA Configuration dialog to close the dialog box. 15. If the SCU-FIX (System Configuration Utility) window is not visible, click on the SCU-FIX icon in the Start menu bar located at the bottom of the screen. The SCU-FIX display will appear: Page 6

7 Building the ifix Database 16. Click File, Save from the SCU-FIX menu bar. 17. Click File, Exit to close SCU-FIX. 1. Click on Start, Programs, ifix, Startup.The Intellution Dynamics Workspace window (in the configure mode) appears: 2. Click on the Add Database Block icon located in the window tool bar. 3. Enter a Database Block name, Sensor1Turbidity for this example then click on the Add button as shown: Page 7

8 4. The Select a Block Type Dialog box appears: 5. Select the Analog Input Block Type AI. 6. Click OK. The Analog Input dialog box appears: 7. Select MB1 Modicon Modbus v6.10c for the Driver, enter MOD1:31001 as the I/O Address, and enter NTU as the units. Page 8

9 8. Click the Add button. The Place Block On/Off Scan dialog box appears: 9. Click Yes. A window for creating displayed units will appear: 10. Click on the Datalink button in the floating Toolbox. Page 9

10 11. Hold the left mouse button down and draw a rectangle on the screen. The Datalink dialog box will appear: 12. Select FIX32.FIX.Sensor1Turbidity.F_CV in the Source box. 13. In the Formatting section of the dialog box, select Numeric as the Type and set the Decimal units to Click OK. The data block, now configured as a datalink, is placed on the ifix Dynamics Workspace. The following screen will be shown: Page 10

11 15. Press Ctrl+W to place the ifix Dynamics Workspace in the Run mode. The real time turbidity value should be displayed: 16. Press Ctrl+W again to switch back to the Configure mode. Save the configuration via File, Save As. 17. Close the file from the ifix Startup window. Click Options, Shutdown ifix. Page 11

12 18. Select Save to save the database when closing down ifix. For more information, visit our AquaTrend Technical Information site at: FOR TECHNICAL ASSISTANCE, PRICE INFORMATION AND ORDERING: In the U.S.A. Call toll-free Outside the U.S.A. Contact the HACH office or distributor serving you. On the Worldwide Web HACH COMPANY WORLD HEADQUARTERS Telephone: (970) FAX: (970) Hach Company, Process and Turbidity Business Unit, All rights reserved. dd/dp 06/00 1ed