Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Document revisions
This protocol supports data reading/writing from the controllers of ALYA lubricant reservoirs.
Since July 2015, this protocol supports a group of I/O tags for data reading/writing from/to the Manex production lines - see Table 4.
Communication station - configuration dialog box - "Protocol parameters" tab.
They influence some of the optional parameters of the protocol.
Table 1
| Key word | Full name | Meaning | Unit | Default value |
|---|---|---|---|---|
| Wait Timeout | Delay between the readings of response until it is completed. | ms | 100 millisec. | |
| Wait First Timeout | First waiting for a response after sending the request. | ms | 100 millisec. | |
| Retry Timeout | The delay between the retry of a request if a communication error occurs. | ms | 100 millisec. | |
| Max Wait Retry | The number of response reading retry until it is completed. | - | 6 | |
| Retry Count | The number of request retries in case of a communication failure. | - | 2 |
A string containing the protocol parameters must be written as follows:
Key_word=value;Key_word=value; ...
Example:
WT=150;MWR=10;
If a keyword with an invalid value in the initialization string is used, the corresponding default value according to the table 1 will be used.
I/O tags: Ai, Ao, Di, Dout.
I/O tag address is an abbreviation of the mnemonic name of I/O object. The list of objects is shown in the table below:
Table 2
| Address | Meaning | Value type | Read/Write |
|---|---|---|---|
| AV | Current weight [kg] | Ai | R |
| HI | Emergency minimum [kg] | Ai, Ao | R/W |
| HA | Emergency maximum [kg] | Ai, Ao | R/W |
| PN | Operating minimum [kg] | Ai, Ao | R/W |
| PX | Operating maximum [kg] | Ai, Ao | R/W |
| SP | Filling status (TRUE - filling, FALSE - draining) | Di | R |
| EN | Error number - see Table 3 | Ai | R |
| WS | Write to serial EEPROM (all changes of Ao must be written to EEPROM, if not, they will be lost during the next reset) | Do | W |
| RT | Reset (it causes the reset of the control station) | Do | W |
The list of error codes when reading the "EN" parameter:
Table 3
| Error code | Meaning |
|---|---|
| 0 | Weight is OK. |
| 1 | Weight is under the permitted range. |
| 2 | Weight is over the permitted range. |
| 3 | Weight is under the emergency minimum. |
| 4 | Weight is over the emergency maximum. |
| 10 | The weight converter does not respond. |
| 20 | The weight converter is not connected. |
| 30 | The strain gauge (tensometer) is not connected. |
I/O tags for data reading/writing from/to Manex production lines:
Table 4
| Address | Meaning | Value type | Read/Write |
|---|---|---|---|
| RN | New weighted roving. After weighting and printing the weight ticket, the application writes a text string into the I/O tag in the format: ID;CV;VZ;POC;ZD; where:
| TxtO | Write |
| RX | Canceling of a roving. After an operator puts down the roving from the scale, the application will write the number of the scale (1 or 2) into the I/O tag. | Co | Write |
| The number of spools on the lines. The I/O tag is in the format "C1;C2;C3; … Cn;", where Ci represents an integral number that indicates the number of spools on line i. Example: "626;42;0;78;562;489;28;55;" | TxtI | Read | |
| NC | Reset the counters of spools on the lines. Write any valid value, to reset the counters. The control unit will send a message in the format "C1;C2;C3; … Cn;", where Ci represents an integer number that indicates the number of spools which were included on line i since the most recent information on the number of spools was sent (see PC). This message will be set as a new value of the I/O tag with the NC address. | TxtO | Write |
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