Pymodbus is a full Modbus protocol implementation using twisted for its
asynchronous communications core.
The library currently supports the following:
Client Features
* Full read/write protocol on discrete and register
* Most of the extended protocol (diagnostic/file/pipe/setting/information)
* TCP, UDP, Serial ASCII, Serial RTU, and Serial Binary
* asynchronous(powered by twisted) and synchronous versions
* Payload builder/decoder utilities
Server Features
* Can function as a fully implemented Modbus server
* TCP, UDP, Serial ASCII, Serial RTU, and Serial Binary
* asynchronous(powered by twisted) and synchronous versions
* Full server control context (device information, counters, etc)
* A number of backing contexts (database, redis, a slave device)
