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11.6 Cautions Concerning the RS-232C Interface
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Symptom Cause / Treatment
The RS-232C has stopped
working completely.
Are the cables properly connected?
Are both the power meter and the personal computer on?
Are the cables properly connected?
Transmission on the RS-232C
is not taking place properly.
Is the personal computer message terminator (delimiter) set
correctly?
Do the power meter’s settings for the device connected to the
RS-232C interface (baud rate, data length, parity check, stop bits,
flow control, terminator) match the settings in the controller?
After transmission on the RS-
232C, the keys on the 3166
freeze up and have no effect.
Cancel the power meter’s key lock function and exit the remote
state.
Are both the power meter and the controller on?
When attempting to read data
using a Basic INPUT statement
the RS-232C hangs.
Be sure to transmit one query before each Basic INPUT
statement.
Did the query that was sent generate an error?
Although a command has been
transmitted, nothing has
happened.
Did an error occur?
Not enough data was loaded.
If the data includes any commas, try using the "LINE INPUT"
statement.
Sending several queries,
produces only one response.
Did an error occur?
Read in the response for each query that is sent, one at a time. If
you want to read in responses all at one time, use the message
unit separator to combine all of the queries into one line.
The query response message
does not agree with the 3166
display.
Due to the response message being produced at the instant that
the 3166 receives the query, there is a possibility that it may not
agree with the display at the instant that the controller reads it in.
1.6 Cautions Concerning the RS-232C Interface
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