Comtech EF Data CDM-570A Installation And Operation Manual page 271

1. From Controller-to-Target, the only permitted values are:
Symbol Function
= The '=' code is used as the Assignment Operator (AO). It establishes that the Instruction Code that precedes it is issued as a command
(ASCII Code 61) 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"
? The '?' code is used as the Query Operator (QO). It establishes that the Instruction Code that precedes it is issued as a query that returns
(ASCII Code 63) 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?"
2. From Target-to-Controller, the only permitted values are:
Symbol Function
=
This code is used in two ways:
(ASCII Code 61)
1.
2.
? 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
(ASCII Code 63) the message and responds with '?'. This indicates that there was an error in the message sent by the Controller.
For example: >0000/TFQ? (with no message arguments).
! If the Controller issues a command that the Target does not recognize, the Target responds by echoing the invalid instruction code,
(ASCII Code 33) followed by '!'.
For example: >0000/ABC!
*
If the Controller issues a command to set a parameter to a particular value, and the value sent is valid, but the modem will not permit that
(ASCII Code 42)
particular parameter to be changed at present, the Target responds by echoing the valid instruction code, followed by '*'.
For example: >0000/TFQ* (with message arguments)
# If the Controller sends a correctly formatted command, but the Target is not in Remote Mode, the unit does not allow reconfiguration and
(ASCII Code 35) responds by echoing the valid instruction code, followed by '#'.
For example: >0000/TFQ#
Serial-based Remote Product Management
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.
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).
CDM-570A/570AL Satellite Modem with Optional Packet Processor
8–5
Revision 5
MN-CDM570A