L&G Toccata via UNIP2 protocol
Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Changes and modifications
Document revisions
Supported device types and versions
This protocol supports the communication with KPX-02 devices and radio modems RMMBX that are used for the autonomous data acquisition by TOCCATA protocol.
UNIP2 protocol is used as a transport configuration and data protocol.
Communication line configuration
- Communication line configuration: Serial, SerialOverUDP Device Redundant.
- Serial line parameters: 2400 - 38400 Baud (depends on settings of KPX-02 or radio modem), 8 data bits, no parity, 1 stop bit.
Communication station configuration
- Communication protocol: L&G TOCCATA via UNIP2
- Station address is configured in KPX-02.
Station protocol parameters
Communication station - configuration dialog box -
"Protocol parameters" tab.
These parameters influence some optional parameters of protocol. You can set the
following station parameters:
Table 1
| Parameters used for UNIP2 communication with KPX-02 (locally). | ||||
| Key word | Full name | Meaning | Unit | Default value |
|---|---|---|---|---|
| ROUTE | Routing Address | The original address of the station for which the data was received by routing. | - | 0 |
| RC | Retry Count | Number of repeat calls if the communication error occurs. | - | 2 |
| RT | Retry Timeout | Delay between repeating the call if the communication error occurs. | ms | 100 |
| WFT | Wait First Timeout | First waiting for the response after sending the call. | ms | 100 |
| WT | Wait Timeout | Delay between reading the response until it is completed. | ms | 100 |
| MTU | MTU For Sending | MTU (maximum transmission unit) for sending data. | bytes | 240 |
| MRTU | MTU For Receiving | MTU (maximum transmission unit) for receiving data. | bytes | 240 |
| MWR | Max. Wait Retry | Number of retry response reading until it is completed. | - | 20 |
| WRD | Wait Response Delay | The period, after writing, during which D2000 KOM keeps communicating with the station to obtain the confirmation of successful write. | sec | 0 |
| Parameters that configures data acquisition by TOCCATA protocol in KPX-02 device (transported). | ||||
| Key word | Full name | Meaning | Unit | Default value |
| MPI | Max PA Items | Maximum PA data in one data block. | 2 to 12 | 10 |
| KLRD | KL Read Delay | Delay between the reading of KL points. | min | 2 |
| MAXERR | Max Errors | Maximum errors in communication with L&G device. When this value is exceeded, all data will become invalid. | - | 4 |
| RETRY | Retry | Number of retries of one call for data from L&G device. | - | 2 |
| TIMEOUT | Timeout | Absolute time necessary to read the response form L&G device. | ms | 3000 |
| TXDELAY | Tx Delay | Delay of sending the response from the communication device after receiving the call. Useful only for RMMBX radio modems. | x10 ms | 15 (150 ms) |
| PRUV | PRU Version | Version of TOCCATA protocol. It is the same as in L&G TOCCATA protocol. | 0, 1, 2, 33 | 0 |
String containing the protocol parameters is defined as follows:
Key_word=value;Key_word=value; ...
Example:
WT=100;MWR=20;
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
The rules are the same as in TOCCATA protocol (see L&G TOCCATA protocol).
Literature
-
Changes and modifications
-
Document revisions
- Ver. 1.0 - October 29, 2002 - Creation of document
- Ver. 1.1 - November 19, 2002 - Parameters WRD and TXDELAY
Related pages: