E.4.3 command structure – Comtech EF Data CDM-570 User Manual

Page 389

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CDM-570/570L Satellite Modem with Optional IP Module

Revision 12

Appendix E

MN/CDM570L.IOM

E–3

All messages from Controller-to-Target require a response as indicated. This will be either to return data that has been requested by the
Controller, or to acknowledge reception of an instruction to change the configuration of the Target.

E.4.3 Command Structure

Controller-to-Target

Start of Packet

Target Address

Address

De-limiter

Instruction Code

Row Index

(Optional)

Code Qualifier

Optional Arguments

End of Packet

<

ASCII code 60




(1 character)





(1 to 4 characters)

/

ASCII code 47




(1 character)






(3 characters)

1 to 3 characters

contained within [ and

] brackets.

= or ?

ASCII codes

61 or 63



(1 character)






(n characters)

Carriage Return and

Line Feed

ASCII code 13 and

code 10

[ 0x0D 0x0A ]

(2 characters)

Example: <0135/TFQ=1949.2345{CR}
Example: <1/rte[1]=rt1|239.022.033.044.32|1|***************|0011|0|0|0|0|3

Target-to-Controller

Start of Packet

Target Address

Address

De-limiter

Instruction Code

Code Qualifier

Optional Arguments

End of Packet

>

ASCII code 62


(1 character)




(4 characters)

/

ASCII code 47


(1 character)




(3 characters)

=, ?, !, *, # or ~

ASCII code 61, 63, 33, 42,

35, 126

(1 character)




(n characters)

Carriage Return, Line

Feed

ASCII code 13,10

(2 characters)

Example: >0654/RSW=32{CR}{LF}

Example: <RTE[4]?>0001/rte[4]=rt4|239.022.033.044.32|1|***************|0011|0|0|0|0|3

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