WIKA CPG2300 Series, Руководство по эксплуатации

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Operating Instructions CPG2300 Series 25
Portable Digital Pressure Gauge
CPG2300 Series
7. Remote Operation
7.1 General
The CPG2300 can be operated from a remote computer which communicates over
a standard RS-232 serial port. The serial port can be used to configure and calibrate
the CPG2300, or to read the output of its sensors. This section of the manual provides
information on the serial port configuration, explains the command conventions used in
this manual, and lists the common commands and queries which are recognized by the
CPG2300.
7.2 Communication Syntax and Command Conventions
All commands and responses are in ASCII characters. The lower and upper case are
interpreted the same. Every command or query begins with the pound symbol (#). The
question mark (?) character is significant to the CPG2300. All other punctuation char-
acters are ignored. Some commands require a password string. A carriage return (<cr>)
and/or linefeed (<lf>) must terminate each command or query. The global address char-
acter is an asterisk (*). It can be sent in place of the actual CPG2300 address.
All of the commands are channel dependent. If sensor A is selected by sending #XCH
A, all subsequent queries and commands work on channel A until #XCH B is sent. The
active channel should always be checked before sending commands, as the channel
status can be controlled by keypad also. Upon power-on the active channel is depen-
dent on pressure display. Channel B is active when sensor B only is displayed. For all
other pressure displays (A or A&B) the Channel A is active. In the case of a single chan-
nel unit, Channel A is always active.
It is good practice to query for the active channel before sending commands that
change a sensors operating parameters. See Table 7.2.3 for commands and queries.