v1.0.0 (2011-07-19)
* First release

v1.0.1 (2011-11-08)
* Added automatic detection RS485 interface and control of RTS signal for RS485 line

v1.0.2 (2011-11-25)
* Minor improvements in HTML code

v1.0.3 (2012-09-19)
* Fixed unhandled exceptions
* Added sending modbus error message 0x0B if reply timeout expire

v1.0.4 (2013-02-01)
* Added sending modbus error message 0x0B if bad crc is received

v1.0.5 (2013-05-22)
* Added read out functions of I/O and CNT port

v1.0.6 (2013-12-11)
* Added support of FW 4.0.0+

v1.0.7 (2014-04-01)
* Increased size of internal buffer

v1.0.8 (2014-05-05)
* Added blocking of new clients when connected client is active

v1.0.9 (2014-11-11)
* Added TCP mode client
* Added serial number and MAC adress into modbus registers

v1.1.0 (2015-05-22)
* Improved requests processing

v1.1.1 (2015-06-11)
* Added test of data length in crc check

v1.1.2 (2015-10-14)
* Disabled signal SIG_PIPE

v1.1.3 (2016-04-25)
* Enabled keep-alive in TCP server mode

v1.2.0 (2016-10-18)
* Added support of two simultaneously working ports
* Removed unnecessary options

v1.2.1 (2016-11-10)
* Fixed bug in uart read loop

v1.3.0 (2017-01-27)
* Added option Reject new connections
* Added option Inactivity Timeout

v1.4.0 (2017-07-10)
* Added MWAN IPv4 address into MODBUS registers
* Fixed reading of MAC address

v1.5.0 (2018-04-23)
* Added option "None" to serial device selection

v1.6.0 (2018-09-27)
* Added support of ttyUSB
* Fixed file descriptor leaks (in ModulesSDK)

v1.6.1 (2018-09-27)
* Added expected ranges of values to JavaSript error messages

v1.7.0 (2020-10-01)
* Updated CSS and HTML code to match firmware 6.2.0+
* Changed limit for "Reply Timeout" to 1..1000000 ms

v1.8.0 (2022-03-03)
* Added additional values related to MWAN status

v1.9.0 (2022-08-12)
* Added additional device configuration CRC32 value

v1.10.0 (2022-11-03)
* Reworked license information

v1.10.1 (2023-02-28)
* Linked statically with zlib 1.2.13

v1.11.0 (2023-06-09)
* Added support for additional binary input and output GPIO pins

v1.11.1 (2024-02-16)
* Added description and summary files
* Recompiled with ModulesSDK 2.1.2

v1.11.2 (2024-05-20)
* Added integrity checks for the -S1 platforms

v1.12.0 (2026-07-15)
* Fixed a harmless error during initialization on non-S1 platforms
* Limited settings editing for administrators only
* System log is filtered to app related messages
* Fixed exit code for "init defaults" on non-S1
* Made Gateway exception optional
* Reworked menu to show only available serial ports with their real names
* Removed XC-CNT support
* Reworked configuration form to disable inapplicable fields
* Added separate Access Control List for each serial port
* Hardcoded the maximum number of active connections to 256
* Added support for Modbus wake-up (it's proprietary, not part of the standard)
* Added support for Modbus TCP Security (using TLS)