GE Energy Services
68K System Monitor
User's Guide
SWM0023 1.00 2 General
3-66 Full Release
SA - Serial Analyzer
Platform þCPM þD20
D20 Base þD20 ME
D20 Base oD20/200
CCU Base þD20/200 ME
CCU Base þD25
Description Use this command to monitor communications on one of the defined serial ports
(other than the assigned 68K Monitor port).
It uses serial I/O system transmit and receive call-outs to intercept all
communications on the channel.
Syntax Below is usage and syntax information for this command
Command Format sa port
Variables None
Parameters port = serial port to monitor (COM#)
Example Type sa com7 and press ENTER.
Results: This activates the serial analyzer monitor on
communications port seven (SIO7).
The monitor displays all communications on the
specified channel until it receives CNTRL-C on the
monitor channel. The display then returns to the
prompt.
Special
Considerations
This function cannot be used on the port assigned to 68K
Monitor (COM0), the SPI port (_SPI), or the SCC1 port
(SCC1).
This function is completely non-intrusive. It cannot affect the
operation of the application that owns the monitored port.
Error Codes If any of the following receiver errors are detected, these codes are displayed:
− over-run errors OV
− parity errors PA
− framing errors FR
− detected breaks BR.
Display Format The monitor displays all data transmitted and received in hexadecimal format.
Transmit data is displayed in inverse video; receive data is normal video mode.
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