DMX1-USB

 

DMX2-USB

 

 

Operating Instructions

 

 

 

 

 

 

 

Contents:

 

1.           General Information

2.           First Operation

3.           Plug & Play

4.           Transfer of Measured Values

5.           MUX10 Data Format

6.           Accessories

7.           Technical Support

 


General Information:

The DMX1-USB and DMX2-USB are interfaces you can use to connect one or several measuring devices with DIGIMATIC interface to a PC. The DMX1-USB provides one DIGIMATIC interface, the DMX2-USB provides two DIGIMATIC interfaces.

 

In what follows both device versions are referred to simply as DMX-USB.

 

Optionally you can connect a foot switch to the DMX-USB to trigger the transfer of measured values. Use the USB cable for connection to the PC. The device is also powered through this cable.

 

When you connect the DMX-USB to your PC for the first time, you are asked to install a device-specific driver. Use the CD provided which contains the required driver, driver installation instructions and these operating instructions. When you install the driver, you will also install a virtual COM port (VCP). This provides your PC software with a serial interface (e.g. COM3) which allows you to control the DMX-USB. See MUX10 Data Format.


Caution: Insert the 8cm CD only into a CD-ROM drive with appropriate tray!

First Operation:

Connect the measuring device and if required a foot switch to the DMX-USB. Then use the USB cable to connect the DMX-USB to the PC. When you connect the DMX-USB to your PC for the first time, Windows will detect new hardware. You will be asked to install its driver. The driver installation will also install a virtual COM port (VCP). After the installation check in the Device Manager to see which number has been allocated to the VCP (DMX Serial Port). Set your PC software to the correct number of the new communications port.

Make sure that you read the Driver Installation Instructions on this CD. They explain how you can change the communications port number if your PC software cannot access the allocated number.

Plug & Play:

After the driver installation you can temporarily unplug the DMX-USB from your PC/notebook if you want to use the USB interface for other purposes or transport your notebook. The DMX Serial Port and USB Serial Converter won’t be displayed anymore in the Device Manager. However, the communications port number will continue to be reserved for the DMX-USB.

When you reinsert the DMX-USB make sure that you use the same USB interface. Otherwise the driver will be installed again, allocating another communications port number. Start the PC software only when the DMX-USB is connected. Otherwise the software might not be able to open the communications port.

Transfer of Measured Values:

Measured values can be transferred in three different ways.

1.       The PC software sends a prompt character. See Advanced Command Set.

2.       A transfer of measured values is triggered on the measuring device itself, e.g. by pressing the Data button.

3.       The foot switch is pressed. This transfers the values of all unlocked measuring devices.

MUX10 Data Format:

The Data format corresponds to that one of the MUX10.

 

Parameters of the Virtual Communications Port

9600 baud, 8 data bits, no parity, 1 stop bit, no handshake

These values have to be set in your PC software.

 

Advanced Command Set

All commands have to be concluded with a carriage return (13hex).

 


0C/R      Measuring device is read (only DMX1-USB)

BC/R      Both measuring devices are read (only DMX2-USB)

1C/R      Measuring device 1 is read

2C/R      Measuring device 2 is read

 

D0C/R    All measuring devices are locked

D1C/R    Measuring device 1 is locked

D2C/R    Measuring device 2 is locked

 

E0C/R    All measuring devices are unlocked

E1C/R    Measuring device 1 is unlocked

E2C/R    Measuring device 2 is unlocked

 

Format of Measured Values

A measured value always consists of 12 ASCII characters concluded by C/R.

 

Example: 01A+1234.567C/R

 

1st character      0                   Measured value ID           With measured values always = 0

2nd character      1                   Canal number                 Specifies the measuring device number

3rd character      A                   Measured value ID           With measured values always = A

4th character      +                   Sign                               + or –

5th-12th char.       1234.567        Measured value               Measured value with variable decimal point

 

Error Messages

An error message always consists of 3 ASCII characters concluded by C/R.

 

Example: 911C/R

 

1st character      9          Error ID                        With error messages always = 9

2nd character      1          Canal number               Specifies the measuring device number

3rd character      1          Error code                  1 = Measuring device not connected, switched off or cannot be requested from the DMX-USB.
2 = Data format of the measuring device not supported.

Accessories

Part No.                       Data cable to connect the measuring device to the DMX1-USB

905 338                        Cable 1m without Data button for DIGIMATIC caliper

905 409                        Cable 2m without Data button for DIGIMATIC caliper

959 149                        Cable 1m with Data button for DIGIMATIC caliper

959 150                        Cable 2m with Data button for DIGIMATIC caliper

937 387                        Cable 1m for DIGIMATIC micrometer

965 013                        Cable 2m for DIGIMATIC micrometer

 

937 179                        Foot switch

Technical Support

If you have questions, please contact:

 

Mitutoyo Messgeräte GmbH

Borsigstraße 8-10

41469 Neuss, Germany

Phone: +49-2137 1020

Fax: +49-02137 8685

info@mitutoyo.de

www.mitutoyo.de