Comtech EF Data CST-5005 - Manual (Page 95)

CST-5005 C-Band Satellite Terminal Remote Control Operation
Rev. 1 A–3
A.2.2 Device Address
The device address is the address of the controller which is designated to receive a
transmitted command, or which is responding to a command.
Valid device addresses are 1 to 3 characters long, and in the range of 1 to 255. Address 0 is
reserved as a global address which simultaneously addresses all devices on a given
communications link. Devices do not acknowledge global commands.
Each RFT-505 which is connected to a common remote communications link must be
assigned its own unique address. Addresses are software selectable and must be in the
range of 1 to 255.
Note: Global address “*” is reserved for the external keypad (i.e., the KP-10).
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 a satellite modem 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 local 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.)
Note: “add” is used to indicate a valid 1 to 3 character device address in the
range between 1 and 255.