''' _context = None _store = None _slave = None STORE_NAMES = def handle_save_start ( self ): '''Handle save start.''' self. that persists the context as a json document. handle_save_end () # - # predefined state machine callbacks # - def handle_save_start ( self ): '''Handle save start.''' def handle_store_start ( self, store ): '''Handle store start.''' def handle_store_end ( self, store ): '''Handle store end.''' def handle_slave_start ( self, slave ): '''Handle slave start.''' def handle_slave_end ( self, slave ): '''Handle slave end.''' def handle_save_end ( self ): '''Handle save end.''' # - # Implementations of the data store savers # - # class JsonDatastoreSaver ( ModbusDatastoreSaver ): '''An implementation of the modbus datastore saver. handle_store_values ( iter ( store )) # pylint: disable=no-member self. handle_slave_start ( slave_name ) for store_name, store in slave. handle_save_start () for slave_name, slave in self. file_handle : # pylint: disable=attribute-defined-outside-init self. ''' with open ( # pylint: disable=unspecified-encoding self. which calls the various callbacks which the sub classes will implement. path = path or 'modbus-context-dump' def save ( self ): '''Save the context to file. :param context: The modbus server context :param path: The output path to save to ''' self. ''' def _init_ ( self, context, path = None ): '''Initialize a new instance of the saver. In order to use it, just complete the necessary callbacks (SAX style) that your persistence format needs.

that can be used to implement a persistence format for the modbus server context. At the moment, the supported output formats are: * csv * json * xml To implement your own, simply subclass ModbusDatastoreSaver and supply the needed callbacks for your given format: * handle_store_start(self, store) * handle_store_end(self, store) * handle_slave_start(self, slave) * handle_slave_end(self, slave) * handle_save_start(self) * handle_save_end(self) ''' import json import as xml # nosec class ModbusDatastoreSaver : '''An abstract base class. There use is very simple:: context = ntext saver = JsonDatastoreSaver(context) saver.save() These can then be re-opened by the parsers in the modbus_mapping module. that can be used to save a modbus server context to file for backup, checkpointing, or any other purpose. '''These are a collection of helper methods. Asynchronous client extended calls example.Asynchronous Client basic calls example.Synchronous client extended calls example.Asynchronous Asyncio Modbus TLS Client Example.

Ab7042 modbus server