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Relay Module Modbus Management/en: различия между версиями
Relay Module Modbus Management/en (просмотреть исходный код)
Версия 14:51, 16 июля 2019
, 4 года назадНовая страница: «==== Register reading example === Let's check whether it is true that we are connected to the module of the desired type. (Service wb-mqtt-serial needs to be stop…»
(Новая страница: «== Command-line device management == The Wiren Board controller software includes modbus_client utility to work with devices connected to the RS-485 outputs, via…») |
(Новая страница: «==== Register reading example === Let's check whether it is true that we are connected to the module of the desired type. (Service wb-mqtt-serial needs to be stop…») |
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The Wiren Board controller software includes modbus_client utility to work with devices connected to the RS-485 outputs, via Modbus Protocol, the detailed description of the command is on the page [[Modbus client/en| Modbus client]]. Access to the command line is described in [[SSH/en| SSh]]. | The Wiren Board controller software includes modbus_client utility to work with devices connected to the RS-485 outputs, via Modbus Protocol, the detailed description of the command is on the page [[Modbus client/en| Modbus client]]. Access to the command line is described in [[SSH/en| SSh]]. | ||
=== | ==== Register reading example === | ||
Let's check whether it is true that we are connected to the module of the desired type. (Service wb-mqtt-serial needs to be stopped). At address 200, a unique signature of 6 registers is stored. Let's read 6 registers, starting with the address 200, and convert the received hexadecimal answer into a character string: | |||
<syntaxhighlight lang="bash">echo -e `modbus_client --debug -mrtu -pnone -s2 /dev/ttyAPP1 \ | <syntaxhighlight lang="bash">echo -e `modbus_client --debug -mrtu -pnone -s2 /dev/ttyAPP1 \ | ||