/
L&G Toccata

L&G Toccata

EnglishSlovensky

L&G Toccata protocol

Supported device types and versions

This protocol supports the following Landis&Gyr devices:

Table 1

Device type

The version of the software in the device

Protocol version

PRU1.64, RWP80

 

TOCCATA1 V.0

PRU1.64, RWP80

 

TOCCATA1 V.1

PRU10.64, PRV2.128

 

TOCCATA2 V.0

RWP80

 AZA v. 07.10

TOCCATA1 V.2

Communication line configuration

  • Baud rate and transmission parameters according to a type of communication.

  • 2400 Bd, 8 data bits, no parity, 1 stop bit in direct connection point-point (TOCCATA1 V.0 and V1).

  • 9600 Bd, 8 data bits, no parity, 1 stop bit in direct connection point-point (TOCCATA2 V.0).

  • If devices communicate via the communication concentrators (KPX, radio modems), the transmission parameters depend on the particular case.

Communication station configuration

  • Communication protocol: L&G TOCCATA

  • The station address is in the range of 0 up to 255 in decimal format. It is used only when communicating via communication concentrators. In the case of direct communication, the address is ignored.

Station protocol parameters

You can define the following parameters:

Table 2

Keyword

Full name

Meaning

Unit

Implicit value

RC

Retry Count

The number of request retries if the communication error occurs.

-

1

RT

Retry Timeout

The delay between repeating the request if the communication error occurs.

ms

1000 millisec.

WFT

Wait First Timeout

The first waiting before reading the response after the request is sent.

ms

300 millisec.

WT

Wait Timeout

The delay between response readings until the response is completed.

ms

300 millisec.

MWR

Max Wait Retry

The number of response reading retries until the response is completed.

-

12

WBR

Wait Before Request

The delay that is used before each request.

ms

0

KPX

KPX Route

The communication via the communication concentrator. The station address is used.

YES/NO

NO

MPI

Maximum PA Items

The maximum number of PA data in one data block. You must always define an even number. If communicating via concentrator, the maximum number is 10, otherwise, it is 24.

-

10

LE

Log Events

It allows saving the text messages to TRACE.LOG from the device. This file is in the current working directory of the communication process.

YES/NO

NO

KLRD

KL Read Delay

The time period to obtain the values of KL data. KL data are read when starting the communication process and again after elapsing of the KLRD period.

min

30 minutes

SACK

Send ACK

Sending ACK message (DLE-ACK) after the D2000 KOM receives the proper packet. A direct connection requires to set YES. Connection via concentrator (KPX=YES) requires to set NO (speeding up of communication).

YES/NO

YES

SENAC

Send Enhanced ACK

Sending enhanced ACK message with station address (DLE-ACK-CR-LF-StationAddress-CR-LF) after the D2000 KOM receives the proper packet.

YES/NO

NO

PRUV

PRU Version

TOCCATA protocol:

  • value 0: TOCCATA1 V.0

  • value 1: TOCCATA1 V.1

  • value 2: TOCCATA2 V.0

  • value 3: TOCCATA1 V.2

0, 1, 2, 3

0

PAF

PA First

At starting the communication, it gives priority to reading the PA instead of KL parameters. KL parameters will be read after PA ones are received from all stations.

YES/NO

NO

FD

Full Debug

Activation of the debug information about received values.

YES/NO

NO

A string containing the protocol parameters is defined as follows:

Key_word=value;Key_word=value; ...

Example:

RC=1;RT=500;KPX=YES;

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

I/O tag configuration

I/O tags: AI, AO, CI, CO, DI, DO, TIR, TOR, TIA, TOA.

In the configuration you must define the following parameters:

  • point type PA or KL

  • address (for KL it is a physical address in the device)

  • size of the data block of a given point (for PA it is always 0)

Literature

-

Changes and modifications

  • March 1999 - Completing the protocol TOCCATA2 V.0.

  • April 1999 - Debugging the TOCCATA2 V.0.

  • April 2002 - Added the version TOCCATA1 V.2.

  • May 7, 2002 - change of behavior of KL points, size 2 bytes, types TiR and ToR - canceled the internal multiplication of received value *60, it is supposed that the input value is in seconds.

Document revisions

  • Ver. 1.2 – February 8, 2000 – Update for version 4.07 and 4.10

  • Ver. 1.3 – May 22, 2000 – Added parameter of protocol WFT.

  • Ver. 1.4 – July 21, 2000 – Added parameter of protocol SACK.

  • Ver. 1.5 - November 26, 2001 - Added parameter of protocol PAF.

  • Ver. 1.6 - April 5, 2002 - Added version TOCCATA1 V.2.

Related pages:

Communication protocols