plc - Related information

• Plc 232serial communication, after sending the read command, only replied 1 or 2 bytes?

  recently, after writing a PLC communication protocol, I sent it a command to read 1 byte after the address 0x0000 (the address 0x0000 exists in PLC, and sent successfully, and the data sent is correct), it should send me 12 bytes (including ACK, site nu...

  Serial-port cPP c plc

  Nov.02,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b371fa-4ecd2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b371fa-4ecd2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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