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Modbus Serial Protocol has been most popular and widely used industrial protocol, keeping in mind, OpenControl offers Modbus Serial OPC Server capable of connecting to Modbus serial devices and hardware. OpenControl Modbus Serial OPC Server can provide data to multiple OPC Clients in real-time at various data scan rates.

OpenControl Modbus Serial OPC Server is based on latest OPC Interface supporting OPC DA and OPC AE standards. You can define multiple devices, groups and items to connect to real time values of Modbus Registers ( Input / Output Coils, Input/ Output Holding Registers).

The OPC server is based on free threading programming model that allow optimizing the number of allocated programming threads depending on the load and number of connected clients to the server.

There are several other features like support for Multiple I/O Devices ( PLCs, RTUs, Temperature Controllers, Flow Meters, Energy Meters etc), Multiple Groups for Tag management, Tag Multiplier for quick configuration, Configuration Import/Export capability and Simple and Interactive User Interface .

The OpenControl Modbus Serial OPC Server comes with built-in online data monitoring that helps to quickly monitor all defined registers values in real-time from the devices.

Engineering Units and Signal Range settings can be enabled to suite data conversions thus saving time to program these functions inside the device.

OpenControl Modbus Serial OPC Server comes with internal device simulator to help configure and develop the project before site deployment, further the simulated device tags can also be used for value place holders for various OPC Clients.

OpenControl Modbus Serial OPC Server also supports OPC XML-DA wrapper that is key for connection to platform independent applications and clients over the Intranet/Internet and Firewalls.

The OpenControl Modbus Serial OPC Server product contains two parts: a user interface configuration module and the actual OPC server, the runtime module.

The configuration module allows you to create a database that holds configuration data of the tags. Such as the tag name, the ranging, and the alarm settings. The runtime module uses a runtime database to access the actual values of the tags configured.
OpenControl Modbus Serial OPC Server also supports devices connected over Serial to Ethernet converters.

Need to check if Ascii protocol is included in Serial opc server.