Plasma Gas Analyzer
79 02001001A_9
The following table lists the commands that the external Valve Box can send to the analyzer.
Immediately starts an auto-span
Immediately starts an auto-zero
Local Regime. Valve Box is under analyzer control. In this mode the
analyzer can be spanned and zero from the front panel pf the
instrument, and it can control valves in the Valve Box.
When analyzer is powered up, it defaults to local regime mode. The
Valve Box on receiving the string output through the RS-232 port will
send the “ar” command to set the instrument in remote mode if
needed.
Remote Regime. Valve Box is under control of the PLC. The
analyzer has the span and zero functions disabled while in Remote
Regime, only the Valve Box can initiate span and zero through the
RS-232 port
The following table gives the setting requirements of RS-232 port of the Valve Box.
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