[PLC4X-44] [Modbus] Make the modbus driver support reading and writing of multiple values

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: Driver-Modbus
• Assignee: Christofer Dutz
• Reporter: Christofer Dutz
• Created: 30/Aug/18 12:32
• Updated: 25/Jan/21 07:37
• Resolved: 25/Jan/21 07:37

Description

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)