How to use Mitutoyo Digimatic Indicator Interface cable ( USB-ITN ) by VCP(serial) API

Mitsutoyo digimatic dial indicator has 10 pin idc connector. port interface is not standard spec. It needs USB cable for this device and computer programming.

USB-ITN cable runs as HID device, HID device has no COM port. 

Mitsutoyo supplies VCP driver for using as Serial port(COM port).

1. download VCP driver bellow link.

https://drive.google.com/file/d/1Jqvw-fO2zItXSliuVXSOlYRzt5G7uoM9/view?usp=sharing

2. download API manual 

https://drive.google.com/file/d/1trXhuMXvzRSQLUaFvmsq25RHE_rR6WpZ/view?usp=sharing

3. Install VCP driver.

   Right click the file "usb-itn.inf" and run "install driver".

4. connect USB-ITN cable to computer.

   it will be installed automatically.

5. Open serial terminal program and connect to COM port.

6. typing "1" and press Enter key.

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command syntax

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request:

[1 byte command ][carridge return]

response:

[1 byte command ][1byte channel][1 byte type][ variable length data ......][carridge return]

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command list 

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V : DEVICE INFORMATION

1 : DATA REQ CMD

0 : MEASURED DATA RESPONSE

8 : FOOT SWITCH

9 : STATUS

ETX : 0x0d (\r)

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example

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REQ RES

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V 1ITN49001557

1 01A+0003.770

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packet description

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0 data command

1 channel (1, fixed)

A normal data(A, fixed)

+ sign

0 value

0

0

3

.

7

7

0

0x0d(\r)