12 063
правки
Modbus-client/en: различия между версиями
Новая страница: «More detailed description of the request and response data structure can be found on the Modbus Protocol page.»
(Новая страница: «---- 6. Turn on all the odd relays and turn off all the even ones. To do this, use the function 15 (Write Multiple Coils). There are only 14 relays in the module,…») |
(Новая страница: «More detailed description of the request and response data structure can be found on the Modbus Protocol page.») |
||
| (не показано 5 промежуточных версий этого же участника) | |||
| Строка 147: | Строка 147: | ||
<syntaxhighlight lang="bash">modbus_client --debug -mrtu -pnone -s2 /dev/ttyAPP1 -a1 -t0x0f -r0x00 -c 14 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000</syntaxhighlight> | <syntaxhighlight lang="bash">modbus_client --debug -mrtu -pnone -s2 /dev/ttyAPP1 -a1 -t0x0f -r0x00 -c 14 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000 0x00FF 0x0000</syntaxhighlight> | ||
Answer: | |||
<syntaxhighlight lang="bash">Data to write: 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 | <syntaxhighlight lang="bash">Data to write: 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 | ||
Opening /dev/ttyAPP1 at 9600 bauds (N, 8, 2) | Opening /dev/ttyAPP1 at 9600 bauds (N, 8, 2) | ||
| Строка 156: | Строка 156: | ||
Note the structure of the query data: | |||
*[01] — | *[01] — address | ||
*[0F] — | *[0F] — write Multiple Coils function code | ||
*[00][00] — | *[00][00] — address of the first flag register to be recorded | ||
*[00][0E] — | *[00][0E] — number of items to record (14) | ||
*[02] — | *[02] — number of data bytes (14 bits are placed in 2 bytes) | ||
*[55][15] — 01010101 00010101 ( | *[55][15] — 01010101 00010101 (the first relay is the lowest bit of the first byte, 8th relay is the highest bit of the first byte, 9th relay is the lowest bit of the second byte) | ||
*[1A][97] — CRC16 | *[1A][97] — CRC16 | ||
As well as note the structure of the answer: | |||
*<01> — | *<01> — address | ||
*<0F> — | *<0F> — write Multiple Coils function code | ||
*<00><00> — | *<00><00> — address of the first flag register to be recorded | ||
*<00><0E> — | *<00><0E> — number of recorded flag registers | ||
*<D4><0F> — CRC16 | *<D4><0F> — CRC16 | ||
More detailed description of the request and response data structure can be found on the [[Протокол Modbus/en|Modbus Protocol]] page. | |||