Comtech EF Data CDD-880, Installation And Operation Manual

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CDD-880 Multi Receiver Router MN-CDD880
Serial-based Remote Product Management Revision 2
7–6
This character is used as the Assignment Operator (AO). It establishes that the Instruction Code that precedes it is issued as a command
to assign or configure operation. The instruction set that follows serves to assign the Target’s new parameter setting or operational
value.
For example: From Controller-to-Target, <0/IG1=aaa.bbb.ccc.ddd/yy means “set the ‘ETHERNET | TRAFFIC | GE’ port IP Address to
aaa.bbb.ccc.ddd/yy”
? (ASCII Code 63)
This character is used as the Query Operator (QO). It establishes that the Instruction Code that precedes it is issued as a query that
returns the Target’s current configured parameter setting or operational value.
For example: From Controller-to-Target, <0/IG1? means “what’s the current ‘ETHERNET | TRAFFIC | GE’ port IP Address?”
7.2.2.5.2 Target-to-Controller Instruction Code Qualifiers
The permitted characters are ‘ = ’, ‘?’, ‘*’ , ‘!’, ‘*’, and ‘#’.
= (ASCII Code 61)
This character is used in two ways:
1. If the Controller sends a query to the Target.
For example: <0/TFQ? (meaning “what is the current value of the transmit frequency?”) – the Target responds with
>0000/TFQ=xxxx.xxxx, the value for that queried parameter.
2. If the Controller sends an instruction to set a parameter to a particular value, and the value sent is valid, the Target acknowledges
the message and responds with, for example, >0000/TFQ = (with no message arguments).
? (ASCII Code 63)
If the Controller issues a command to set a parameter to a particular value, and the value sent is not valid, the Target then acknowledges
the message and responds with ‘?’. This indicates that there was an error in the message sent by the Controller.