Example of programming and operation of single DPS

Introduction to programming

Connection and System requirements

Commands for PC programming

Commands for Master-Slave programming

Master-Slave connection diagrams

Setting Up a Master-Slave Application

Example of programming and operation of single DPS

Example of programming Master-Slave application

Diagram for programming example

Schematic for molding Medical Implantable RF Coil

Graph - sequence of operation steps example

The example program - storing program to DPS processor

The example below shows the programming possibilities by utilizing the Hyper Terminal program that is part of all Windows Operating Systems.  To begin programming, just setup the correct serial port and the Hyper Terminal session per the description shown in the Connection and System requirements section.

Programming or operation of single DPS

Make certain to connect the DPS with the PC as shown in Fig.12 below.  For experimental purposes attach a load to the DPS load terminal.  It’s ok to use a small DC motor, an electromagnetic brake or some other device that will simulate the load.

Figure 12. Controlling or programming the DPS

         Power ON all equipment and start the Hyper Terminal session.

         Begin with command “G[CR]” to take control over the DPS switching to PC Mode Operation. If the notifier is turned ON, the notification [!] or [?] will be visible.  Notification [!] denotes a successful command execution.

         Now, type command “L0100 [CR]”. You will observe that the current on the DPS display will change from 0000 to some other value depending on the connected load resistance.  Pushing the “CURRENT” or “CTRL. VOLT” pushbutton, the display will alter between current and % of current, or control volt and % of control volt, respectively.  The control voltage will display a value of .312V or 6.2%.  Explanation: 5V/4096*256 =.312Vdc - where 256(dec) represents 0100(hex).

Note: To perform this action with Open Frame DPS, the device must have attached Display PN.0020501.

                 Now you can explore on your own other commands including Write category I, L, M, N, P, Q or Read category h, H, !I, !L, !M, !N, !P, !Q, !W, !y, !Y, !Z, !#.  For example, you can use command H001[CR] to continuously display the Control Signal.  To stop the display, use command "h[CR]" then use command "H003{CR]" again to get a dual display of the Control Signal and Filtered Control Signal.

        All commands that are included in the Commands for PC programming page can be used for the programming and operation of the DPS. You can develop a program which can be utilized to test the performance of electromagnetic brakes using Motorized Dynamometer or performance matching - see Performance Test Program Software or MP - Matching Performance and Control Software.

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