99
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7.6 Notes on RS-232C Interface
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Initialization method
Item
After power-on ∗RST command ∗CLS command
RS-232C communication
conditions
－ － －
Device-specific functions
(range, etc.)
－ ● －
Output queue
● － －
Input buffer
● － －
Event resister
● － ●
Current pass
● － －
Header on/off
● － －
Symptom Cause/Treatment
The RS-232C has stopped
working completely.
Are the cables properly connected?
Are all the devices powered on?
Has the communication condition been
correctly set?
Although a command has been
transmitted, nothing has
happened.
Using the
∗
ESR? query, inspect the standard event
status register, and check what type of error has
occurred.
Sending several queries,
produces only one response.
Has an error occurred?
Send the queries one at a time, and read the
responses individually.
When you want to read them in all at once, try
doing so by putting them all on one line separated
by the message separator character.
Have
∗
IDN? query been used?
The response message to a
query differs from the display
on the front panel of the
3237/38/39.
Due to the response message being produced at the
instant that the 3237/38/39 receives the query, there
is a possibility that it may not agree with the display
at the instant that the controller reads it in.
7.5 Initialized Item List
7.6 Notes on RS-232C Interface
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