Yokogawa Standalone MW100 - Manual (Page 54)

2-4
IM MW100-17E
RS-422A/485 Specific Commands/Responses
Commands specific to the RS-422A/485 interface and their responses are shown in the
table below.
Command Syntax Command Meaning Responses
ESC Oxx CRLF Instrument open • Response from instrument address specified
by command: ESC O xx CRLF
• No response when instrument address
specified by command does not exist *
ESC Cxx CRLF Instrument close • Response from instrument address specified
bycommand: ESC C xx CRLF
• No response when instrument address
specified by command does not exist *
* The reasons that an instrument of the specified address might not exist include a command
error, the specification does not match the address set on the instrument, the power to the
instrument is not turned ON, or the instrument is not connected by serial interface.
• The xx in the table indicates the address of the instrument. An address from 01 to
32 can be set, in the range of addresses set on the target instrument.
• Only one instrument can be open at a time.
• If an instrument is opened using the ESC 0 command, commands and responses
with that instrument are enabled.
• If one instrument is opened using the ESC 0 command, any other instrument that is
already opened is automatically closed.
• Most commands can use CR+LF or LF as a terminator, but these commands can
only use CF+LF.
Note
ESC is expressed as 0x1b in ASCII code. See appendix 5.
2.1 Response Format