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Release history
Version 3.15 (2024-09-27)
* Add support to display integer values as unsigned values
Version 3.14 (2024-09-07)
* Read device identification for a slave conformity level of 1
triggered wrongly an Invalid reply error
Version 3.13 (2024-08-09)
* Fixed bug regards display of 64-bit input registers
Version 3.12 (2024-07-26)
* Added support for 64-bit data types for FC3, FC4 and FC16
* Fixed issue of Read Device Identification (-t id) being limited to
slaved address 1
Version 3.11 (2024-01-22)
* Added Read Device Identification for FC 43 subfunction 14 (-t id)
* Added Read File Record FC 20 (-t file)
* Added Write File Record FC 21 (-t file)
* Added Lufkin ELAM protocol variant (-x)
* Modbus UDP: Fix length detection when transaction ID is set to 0
* Modbus/TCP: Fix wrong invalid MBAP ID/invalid frame indication for
the following frame if extranous characters are sent in the TCP
stream
* Added Linux ARMv6 RPI (32-bit) platform for Pi Zero
Version 3.10 (2021-03-26)
* Added Linux ARMv8 AArch64 (64-bit) platform
Version 3.9 (2020-07-14)
* Added support for single register and single coil writes
* Display function code used in protocol configuration
* Removed automatic fallback to FC6 added in 3.7.
Version 3.8 (2020-03-24)
* Writing negative values was causing Unrecognized option or missing
option parameter error under Linux
Version 3.7 (2019-07-21)
* Write functions with a count of 1 use now the following scheme:
Registers use FC16 first, and if an illegal function exception is
received will try FC6 as fallback. Coils always use FC5 for a
count of 1. This helps with slave devices which do not implement
mandatory FC16.
Version 3.6 (2018-04-05)
* MODBUS UDP protocol added (-m udp)
Version 3.5 (2017-03-24)
* Fixed argument validation bug which prevented using PDU mode with
a start register of 0 (-r0 -0)
Version 3.4 (2013-01-30)
* Increased reference count to 2000 for discretes/coils
Version 3.3 (2012-10-25)
* Fixed error message when passing negative float values on the
command line
Version 3.2 (2012-03-28)
* COMn syntax can now also be used for COM port number >= 10
Version 3.1 (2011-05-27)
* Slave ID of 0 is supported for Modbus/TCP
Version 3.0 (2011-03-05)
* Write function added
* protocol is now auto-detected as RTU or TCP depending on value of
first parameter
* -l pollDelay parameter added -- Added "--" separator before values
are printed to make parsing of result easier
Version 2.10 (2010-08-26)
* -c parameter now accepts a value of 125.
* Changed default start reference (-r) to 1
Version 2.9 (2010-01-29)
* Fixed lock-up issue on some Linux platforms which was introduced
in 2.7.
Version 2.8 (2009-11-16)
* Default baudrate is now 19200 as per Modbus standard.
Version 2.7 (2009-06-04)
* Corrected help and range check for -a parameter
Version 2.6 (2008-10-30)
* Added option -0 for PDU addressing and option -e for Enron/Daniel
32-bit mode.
Version 2.5 (2008-04-03)
* A return code of 1 is returned if operation was not successful
otherwise 0
* -c parameter now accepts a value of 100.
* Added time-out command line parameter.
* Retry count is now 0 for serial protocols (was 2 before).
Version 2.4.0 (2006-10-20)
* Default parity changed to even as per Modbus standard.
Revision 1.17 (2005-06-07)
* Using the -i command line parameters returned an error message in
ealier releases.
Version 2.2.1 / Revision 1.16 (2004-09-22)
* Using the -d and -s command line parameters returned an error
message in earlier releases.
Version 2.2 / Revision 1.15 (2004-04-25)
* RTU over TCP protocol added, which is also known as encapsulated
RTU.
* Recompiled against 2.2 release of libmbusmaster.
Version 2003-05-20
* Recompiled against 2.0 release of libmbusmaster.
* RTU/ASCII: Added RS-485 mode for Win32, QNX and Linux platforms.
* ASCII: Fixed casting bug which caused protocol error when
transmitting FF.
* MODBUS/TCP: Time-out applies now also when connecting to a server,
tolerate a zero address field in an exception reply, fixed
auto-retry.
Version 1.2 (2002-11-19)
* Terminates in case of a closed TCP/IP connection.
* Some error messages changed.
* Changed command line options for holding and input registers. -t4
is now holding register, -t3 input register.
* Retry option is now working.
* --version paremeter introduced.
* Retries fixed.
* -p parameter for MODBUS/TCP introduced.
* Default parity changed to NONE.
* Based on FieldTalk v1.3.
Version 1.1 (2002-07-15)
* Reference index print-out for 32-bit values corrected.
* Based on updated FieldTalk library which fixed issue with time-out
monitoring
Version 1.0 (2002-03-03)
* First release
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