Geometrics Inc. G-882 Cesium Marine Magnetometer Page
Echo Error command:
This is not really a command but a message. If a command string is incorrectly
sent or garbled the counter receiving it will change it to 'ERRxx' before echoing it
to the next counter. 'xx' specifies the counter number where the syntax error first
occurred. This error message is interpreted as a command by subsequent
counters which echoes the string unchanged.
Interrogate Setup command:
This command allows the operator or logging software to identify which analog
channels and Julian clock fields are being output via the serial port. This
information is used to verify output fields with their hardware channels, and to
allow automated calculation of data field position within each sample being sent
out. In addition the software revision number can be interrogated.
The first character 'I' designates the interrogate command, the second letter
designates which item to interrogate. 'A' specifies interrogating the analog
channels, 'J' specifies the Julian clock, and 'V' specifies the software revision
number.
The next two characters specify the counter number '00' through '19'. If the
counter number is omitted, counter 0 will respond.
The addressed counter will insert a response into the command string before
sending echoing it out the serial port to the display terminal or subsequent
counter modules. Subsequent counter modules will ignore these extra response
characters and pass them unmodified down the chain. The response format for
each of the three interrogate items are detailed in the examples below:
Analog channels:
The command "IA01" will command counter number one to output
characters indicating which of the six analog channels have been selected
for output. Counter 1 will modify the command string to "IA01:abcdef"
where the letters a-f are either an ASCII '0' (channel off) or '1' (channel on)
corresponding to channels 0-5 respectively. If analog channel 0,3, and 4
were selected on counter 1 the echoed command string would be
"AI01:100110" followed with a carriage return line feed.
Julian Clock:
The command "IJ" will command counter 0 to output which Julian clock
fields have been selected for output (note that the two digit counter number
was not specified, so counter 0 responds by default). Counter 0 will modify
the command string to "IJ:abcde" where the letters a-e would be replaced
with an ASCII '0' (field off) or '1' (field on). The five output fields are:
To Next Page
Loading...
Need help?
General