Appendix A: Versions and Modifications

Firmware Versions

Version	Date of Modification	Remarks
8	31.08.2015	Demo version
12	15.02.2016	Improved accuracy of real-time clock
18	16.09.2016	Reading and execution of task files added; Added adjustment of time delays in task files
24	24.03.2017	Possibility to work with files via WEB-interface added; Improvements for working with time (setting via MODBUS, synchronization with the server, astronomical calculation of sunrise and sunset, automatic transition to summer time); Added storing statistics in memory, powered by the battery; RS-485 slave modes and redirecting requests to remote MODBUS TCP server added
29	08.09.2017	Added support for task files in UTF-8 format; Added support for input GSM connections via MODBUS TCP (for static IP provided by the GSM operator)
30	02.11.2017	Added ability to fulfil the task files more often than 1 second
32	06.12.2017	Added ability to use in the task files the special sequences in the rows - telephone numbers
36	22.02.2018	Added ability to receive the account status from the GSM operator; Improved stability of GSM operation; Clock synchronization and account obtaining commands are added
37	03.08.2019	Parameters in the task file, located in a row for one device, are read by one request; Factory reset also clears the built-in memory of tasks before starting them; Improvements in work with statistics and hours registers; Improvements in the algorithm of the commands for calculating the maxima and minima in the problem files; The number of characters in lines in task files has been increased to 120; Extended support for WEB-browsers
41	20.11.2020	Added ability to log to a memory card; Added import and export of settings to a memory card; Simplified and improved work with the memory card from the WEB-interface; Added JSON and XML APIs for MODBUS authorization and requests; Added a call to the WEB interface over MODBUS connections; Added support for second remote MODBUS TCP server; Improved work with remote MODBUS TCP servers; Improved DNS cache update; Improved Ethernet stability
43	17.07.2023	MODBUS TCP connection encryption feature added; Number of remote MODBUS TCP servers increased up to three; Improvements in working with remote MODBUS TCP servers (sending password, sending ping to maintain connection)

Hardware Versions

Version	Date of Modification	Remarks
1	31.08.2015	Demo version
2	18.03.2016	Connection of the GSM module is improved; Improved insulation of operating lines of relay outputs
3	12.07.2016	Improved accuracy of real-time clock