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A.2.3 command/response, A.2.4 end character – Comtech EF Data KST-12000 User Manual

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KST-12000 Ku-Band Satellite Terminal

Revision 4

Remote Control Operation

MN/KST12000.IOM

A.2.3 Command/Response

The command/response portion of the message contains a variable length character
sequence which conveys command and response data.

If the RFT-1200 receives a message addressed to it which does not match the established
protocol or cannot be implemented, a negative acknowledgment message is sent in
response. This message is:

>add/?ER1_PARITY ERROR'cr''lf']

(Error message for EV, OD, or No parity errors.)

>add/?ER2_INVALID PARAMETER'cr''lf']

(Error message for a recognized command which cannot be implemented or has parameters
which are out of range.)

>add/?ER3_UNRECOGNIZABLE COMMAND'cr''lf']

(Error message for unrecognizable command or bad command syntax.)

>add/?ER4_CONVERTER IN LOCK MODE'cr''lf']

(Controller in Lock mode. Must go to Enable mode first.)

>add/?ER5_NOT SUPPORTED BY HARDWARE'cr''lf']

(Command is a valid command. However, it is not supported by the current hardware
configuration.)


Notes:

1. “add” is used to indicate a valid 1 to 3 character device address in the range

between 1 and 255.

2. Global address “*” is reserved for external keypad commands (i.e., for the

KP-10).

A.2.4 End Character

Each message is ended with a single character which signals the end of the message:

• “cr”

Carriage return character for commands

• “]”

End bracket for responses

Note: For the external keypad (i.e., the KP-10), the end of message character is:


• “cr]”

Carriage return and end bracket for commands

• “]”

End bracket for responses

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