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Sensors Modbus Management/en: различия между версиями
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Let's check whether it is true that we are connected to the module of the desired type. (Module 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: | Let's check whether it is true that we are connected to the module of the desired type. (Module 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/ttyRS485-1 \ | |||
<syntaxhighlight lang="bash">echo -e `modbus_client --debug -mrtu -pnone -s2 /dev/ | |||
-a1 -t0x03 -r200 -c 6 | \ | -a1 -t0x03 -r200 -c 6 | \ | ||
grep Data | sed -e 's/0x00/\\\x/g' -e 's/Data://' -e 's/\s//g'` </syntaxhighlight> | grep Data | sed -e 's/0x00/\\\x/g' -e 's/Data://' -e 's/\s//g'` </syntaxhighlight> | ||
As a result of the command we receive string '''WBMS'''. The WB-MS module in the example has Modbus address 1. | As a result of the command we receive string '''WBMS'''. The WB-MS module in the example has Modbus address 1. | ||