SPOOL communication protocol
Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions
Kotva | ||||
---|---|---|---|---|
|
...
This protocol allows
...
reading of the weighted values of spools in the scales produced by ALYA Poprad. It can be used when several scales are connected to a line, since it contains the scale addressing.
For communication with one scale, you may use a simpler protocol ALYA Gina.
ALYA Spool enables to send a request to several scales (they
...
can be selected by the station parameter Scales). Each scale can send a response in the format
...
<STX><weight><tara><material><stand><winding><ETX><CRC>, where:
- <STX> start byte (02H)
...
- <weight> 7 bytes for material weight, e.g. " 23.00"
- <tara> 6 bytes for tare, e.g. " 0.00"
...
- <material> 4 bytes for material code, e.g. "0000"
...
- <stand> 4 bytes for number of stand, e.g. " 331"
...
- <winding> 1 byte for
...
- coil winding. 1=full
...
- winding, 0=non-
...
- full winding
- <ETX> stop byte (03H)
- <CRC> check sum
Example of response:
<STX> 23.00 0.000000 3311<ETX>2
The address of the I/O tag is a number of a stand, on which the weight was measured .
(" 331" in example above)
Kotva | ||||
---|---|---|---|---|
|
...
Kotva | ||||
---|---|---|---|---|
|
...
- Communication protocol: ALYA Spool
- Station The station address is not important.
Configuration dialog window - tab "Protocol parameters".
They influence some optional parameters of the protocol.
Table 1
Parameter | Meaning | Unit | Default value | |||
---|---|---|---|---|---|---|
|
Waiting between the |
readings of a response until it is completed. | ss.mss | 00.050 | |||||
| First |
waiting before reading the response after sending a |
request. | ss.mss | 00.100 | ||||
|
The number of |
retries when reading the response until it is completed. | - | 4 | ||||
|
The number of retry requests in case of a communication error |
. | - | 2 | ||||
|
Comma-separated addresses of the scales which will be |
queried. The scale address is a capital letter. In periodic data reading, the D2000 KOM process tries to communicate with all configured scales and reads the values from them. Example: A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P | - |
Kotva | ||||
---|---|---|---|---|
|
...
I/O tags: AI
I/O tag address - number are numbers of standstands.
I/O tag value is a weight of spools measured on the entered standsspecified stand.
Kotva | ||||
---|---|---|---|---|
|
...
Kotva | ||||
---|---|---|---|---|
|
...
- July 8, 2015 - added the parameters of the station were extended
Kotva | ||||
---|---|---|---|---|
|
...
- Ver. 1.1 – February 88th, 2000 – updating of the document
- Ver. 1.2 - July 88th, 2015 - revision and updating
Info | ||
---|---|---|
| ||
...