INFICON STM-2XM 2-Channel Rate/Thickness Monitor - Manual (Page 119)

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STM-2XM Operating Manual
5.8.13 Command Examples
5.8.13.1 Query Software Version
<STX><ADDR><CMD_RSP>[<DATA>...]<CKSUM1><CKSUM2><CR>
Hexadecimal example:
<02><10><80><40><3D><30><0D>
Command Type . . . . . . . . . . . . . . . . Query
Hexadecimal. . . . . . . . . . . . . . . . . . . 02
Description . . . . . . . . . . . . . . . . . . . . STX Frame Start Flag
Hexadecimal. . . . . . . . . . . . . . . . . . . 10
Description . . . . . . . . . . . . . . . . . . . . Address (16 decimal)
Hexadecimal. . . . . . . . . . . . . . . . . . . 80
Description . . . . . . . . . . . . . . . . . . . . OpCode_USRAPI value
Hexadecimal. . . . . . . . . . . . . . . . . . . 40
Description . . . . . . . . . . . . . . . . . . . . @; USRAPI_atQuery
Hexadecimal. . . . . . . . . . . . . . . . . . . 3D
Description . . . . . . . . . . . . . . . . . . . . Checksum 1
Hexadecimal. . . . . . . . . . . . . . . . . . . 30
Description . . . . . . . . . . . . . . . . . . . . Checksum 2
Hexadecimal. . . . . . . . . . . . . . . . . . . 0D
Description . . . . . . . . . . . . . . . . . . . . SMDP Packet Terminator (CR)
NOTE: The address must match the slave device (0x10 for point-to-point, or 0x11
to 0xFE for the RS-485 bus) and the command is then decoded per the
0x80 prefix.