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This protocol enables to read the reading of the weighted values from the VT200 scale VT200 produced by ALYA Poprad. In addition to reading net weight and tare, it enables reading signs characters from the keyboard, reading of EAN-code codes, and controlling the built-in monochromatic LCD display with a resolution of 240x64 pixels.
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- Category of communication line: TCP/IP-UDP
- Parameters of a UDP line:
- Host: IP address of a scale configured in the parameters of a scale
- Port: the UDP port of a scale where requests are sendsent. Default The default value (according to the documentation) is 3396.
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- Communication protocol: ALYA VT200.
- Address The address of the station is irrelevant and does not need not to be defined. Only one station may be configured on one line.
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Station protocol parameters
| Key wordKeyword | Full name | Meaning | Unit | Default value | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Local Port | The UDP port where the D2000 KOM awaits awaits responses from the scale. Permitted values are in the range 1-65535. | - | 3396 | ||||||
| Data Timeout | Timeout for receiving message a response from scale on call from the scale when the D2000 KOM process sends a request. | sec.mss | 0.500 | ||||||
| No Delete | Setting the value to True will cause the D2000 KOM process process not to send buffer delete requests during the reading of keystrokes and barcodes. Parameter The parameter is useful only during tuning of communication. | - | False |
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| I/O tag address | I/O tag type | Meaning | ||||||
|---|---|---|---|---|---|---|---|---|
| NETTO | Ai | Net weight in kg. Note: If a scale reports the unsteady status (see I/O tag STEADY), the I/O tag will be Invalid. | ||||||
| TARA | Ai | Tare in kg. Note: If a scale reports the unsteady status (see I/O tag STEADY), the I/O tag will be Invalid. | ||||||
| Di | Information on whether a scale status is steady (True) or not yet or unsteady (False). | ||||||
| ZERO | Di | Information on whether a scale shows null zero weight (True) or not (False). | ||||||
| RANGE | Ci | Scale range: 0, 1 or 2 according to the standard EN 4551045510 standard | ||||||
| KEYCODE | TxtI | Keystroke(s) read from the keyboard. Note: After reading keystroke(s) from a keyboard, they are deleted from a keyboard buffer so that during the next reading from the scale, this I/O tag is set to Invalid (unless parameter the ND parameter is set). Therefore, it is necessary to handle keystrokes within an ESL script. | ||||||
| BARCODE | TxtI | EAN-code read from a bar-code reader. Note: After reading a bar-code from a bar-code reader, it is deleted from the reader so that during the next reading from the scale, this I/O tag is set to Invalid (unless parameter the ND parameter is set). Therefore, it is necessary to handle bar-codes within an ESL script. | ||||||
| DISPLAY | TxtO | The I/O tag that is used for communication with a monochromatic display on the scale. The string must consist of binary data in the format which is stated defined in the manual from a producer. Message The message format is <XH><XL><YH><YL><WH><WL><HH><HL><data>, where:
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- Ver. 1.0 – July 14, 2015 – created the creation of the document
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