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ALYA - lubrications communication protocol

Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Document revisions

Supported device types and versions


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 Manex production lines - see Table 4.


Communication line configuration


  • Communication line category: Serial.
  • Serial line parameters:
    • Baud Rate: 38400 Baud
    • Odd parity, 8 data bits, 1 stop bit

Communication station configuration


  • Communication protocol: ALYA Lubrikacie.
  • Station address is an address of control station for the communication over RS485 bus. Address is a one-byte value.
    Note: commonly used station addresses (A,B,C...) must be configured as their ASCII codes, i.e. 65, 66, 67 ..


Station protocol parameters

Communication station - configuration dialog box - "Protocol parameters" tab.
They influence some of optional parameters of protocol.

Table 1

Key wordFull nameMeaningUnitDefault value
WT
Wait TimeoutDelay between the readings of response until it is completed.ms100 millisec.
WFT
Wait First TimeoutFirst waiting on response after sending the call.ms100 millisec.
RT
Retry TimeoutDelay between the retry of call if some error in communication occurs.ms100 millisec.
MWR
Max Wait RetryNumber of response reading retry until it is completed.-6
RC
Retry CountNumber of request retries in case of a communication failure.-2

String containing the protocol parameters is being defined as follows:

Key_word=value;Key_word=value; ...

Example:

WT=150;MWR=10;

If there is used a keyword with an invalid value in the initialization string, there will be used corresponding default value according the table 1.

I/O tag configuration


I/O tags: Ai, Ao, Di, Dout.

I/O tag address is an abbreviation of mnemonic name of I/O object. The list of objects is listed in the table below:

Table 2

AddressMeaningValue typeRead/Write
AVCurrent weight [kg]AiR
HIEmergency minimum [kg]Ai, AoR/W
HAEmergency maximum [kg]Ai, AoR/W
PNOperating minimum [kg]Ai, AoR/W
PXOperating maximum [kg]Ai, AoR/W
SPFilling status (TRUE - filling, FALSE - draining)DiR
ENError number - see Table 3AiR
WSWrite to serial EEPROM (all changes of Ao must be written to EEPROM, if not, they vanish at the next reset)DoW
RTReset (it retrieves the reset of control station)DoW


The list of error codes when reading the parameter "EN":

Table 3

Error codeMeaning
0Weight is OK.
1Weight is under permitted range.
2Weight is over permitted range.
3Weight is under emergency minimum.
4Weight is over emergency maximum.
10Weight converter does not respond.
20Weight converter is not connected.
30Strain gauge is not connected.


I/O tags for data reading / writing from Manex production lines:

Table 4

AddressMeaningValue typeRead/Write
RNNew weighted roving. After weighting and printing the weight ticket, the application writes a text string into I/O tag in the format:
ID;CV;VZ;POC;ZD;

where:
  • ID - identification number of weighting. Autoincrement integer [1, 2, 3, ...].
  • CV - number of scale [1, 2].
  • VZ - preparing from the outside in meters, integer.
  • POC - number of unspool cycles [0, 1, 2].
  • ZD - including into the line. Integers separated by blank space. First number means a priority line, the second one and others represent the alternative lines, e.g. 7 5 6.
Example of written value: "5247;2;60;1;6 4 5;"
TxtOWrite
RXCancelling a roving. After an operator puts down the roving from the scale, the application will write the number of scale (1 or 2) into the I/O tag.CoWrite
PC
Number of spools on the lines. I/O tag is in the format "C1;C2;C3; … Cn;", where Ci represents an integral number that indicates number of spools on the line i.
Example: "626;42;0;78;562;489;28;55;"
TxtIRead
NCReset the counters of spools on the lines. Write any valid value, to reset the counters. The control unit will send message in the format "C1;C2;C3; … Cn;", where Ci represents an integer number that indicates the number of spools which were included on the line i since the most recent information on the number of spools (see PC).
This message will be a new value of I/O tag with the address NC.
TxtOWrite

Literature


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Document revisions


  • Ver. 1.0 - August 21, 2001 - creation of document
  • Ver. 1.1 - July 15, 2015 - support of Manex production lines


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