St - Serial Test - GE 68K System User Manual

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ST - Serial Test

þ
CPM
Platform
Use this command to start one of these two serial port test procedures:
Description
•
an automatic loop-back test of the defined serial port
−
•
manually forcing the mark or space line states from the RS-232 drivers
−
Syntax Below is usage and syntax information for this command
Command Format
Variables
Parameters
Example
Special
Considerations
3-74
þ þ
D20 D20 ME
D20 Base D20 Base
transmits and receives a series of characters of different formats.
allows you to monitor and adjust modem levels or frequencies.
CPM / D20:
CCU / CCUME / D25:
/f =
/l =
port =
baud =
Type st /l com7 9600 and press
Results: This forces the RS-232 transmitter driver for
communications port seven (7) to perform the loop-
back test at 9600 bps.
The system displays the current state of the test.
Cancel the force test manually with
The loop-back test terminates either on an error or on
completion of the test. The monitor displays the
prompt after stopping either test.
•
These tests temporarily assume control of the specified
communications port, and disrupt any current activity.
•
They may also, depending on the application, affect
subsequent operation.
To ensure that you avoid this, you must reboot the system
when you complete all testing.
SWM0023 1.00 2
þ þ
D20/200
CCU Base
st /(f | l) port
st /(f | l) port [baud]
force mark or space states
automatic loop-back test
serial port to test (COM#)
data rate in bps (decimal)
.
ENTER
68K System Monitor
User's Guide
þ
D20/200 ME D25
CCU Base
- .
CTRL C
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