Comtech EF Data CDM-570A - Manual (Page 245)

CDM-570A/570AL Satellite Modem with Optional Packet Processor MN-CDM570A
Serial-based Remote Product Management Revision 2
8–5
8.2.2.5.1 Controller-to-Target Instruction Code Qualifiers
The only permitted characters are ‘ = ’ and ‘?’.
= (ASCII Code 61)
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 is the current ‘ETHERNET | TRAFFIC |GE’ port IP Address?”
8.2.2.5.2 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).