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/to the 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.
The station address is an address of the control station for the communication over RS485 bus. The 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 the optional parameters of the protocol.

Table 1

Key word	Full name	Meaning	Unit	Default value
WT	Wait Timeout	Delay between the readings of response until it is completed.	ms	100 millisec.
WFT	Wait First Timeout	First waiting for a response after sending the request.	ms	100 millisec.
RT	Retry Timeout	The delay between the retry of a request if a communication error occurs.	ms	100 millisec.
MWR	Max Wait Retry	The number of response reading retry until it is completed.	-	6
RC	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 tag configuration

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