In the next example, the system would not interpret the GO command from the strings:
bGO (b meaning blank)
GGO
As previously stated, commands may be entered in either upper or lower case alpha characters. Case has no effect on the CM interpretation.
6.11 Command Responses
Whenever an activated (selected) PS chassis receives a command string, the CM responds by sending one of the following character strings to the terminal (remote control device):
RDYxx
MSGxx
ERRxx, (error code)
The characters “xx” identify the chassis (CM) originating the response. The identification characters “xx” have a value in the range of
If the last command did not execute properly, or if the command parameters (or syntax) were invalid, the CM returns an error message containing an error code. The error codes are defined at the end of this section.
If a change in the PS chassis occurred after the CM transmitted the last status information to the remote control device, the CM responds with MSGxx.
Note: If a temporary status change occurred and the status of the chassis returned to the status last transmitted, the software does not indicate a change. That is, the CM does not respond with MSGxx.
If neither an error condition or status change occurred since the chassis responded to the last command, the CM responds with RDYxx.
6.12 Command Descriptions
The CM responds to ASCII character commands received on the connected communications data channel. These commands provide the user with the following functional operations:
1.Select PS Chassis
2.Request Software Revision Level
3.Request Status
4.Reset Alarm Status
5.Enable/Disable Alarm Status Reporting (valid only with CRTxx)
6.Request Switching
7.
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© 1999, ADC Telecommunications, Inc.