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Posted to issues@plc4x.apache.org by "Alvaro del Castillo (Jira)" <ji...@apache.org> on 2019/12/12 06:56:00 UTC
[jira] [Commented] (PLC4X-44) [Modbus] Make the modbus driver
support reading and writing of multiple values
[ https://issues.apache.org/jira/browse/PLC4X-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994296#comment-16994296 ]
Alvaro del Castillo commented on PLC4X-44:
------------------------------------------
[~cdutz] I have tested to write multiple values and it works. Great! And soon I will test also the multiple read.
Next days I plan to read the how to about generated drivers you have pointed out above. But the PLC4x API will it change?
> [Modbus] Make the modbus driver support reading and writing of multiple values
> ------------------------------------------------------------------------------
>
> Key: PLC4X-44
> URL: https://issues.apache.org/jira/browse/PLC4X-44
> Project: Apache PLC4X
> Issue Type: Improvement
> Components: Driver-Modbus
> Reporter: Christofer Dutz
> Priority: Major
>
> Currently the modbus driver would throw an Exception when writing more than one item and/or value in one request
> Plc4XModbusProtocol.encodeWriteRequest
> This however has to be possible. If the protocol itself doesn't support it, we need to implement some automatic code similar to that of the S7 driver (See: DefaultS7MessageProcessor and the PendingWriteQueue in S7Protocol)
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