Owner's manual

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