Comtech-ef-data PCB-4000 Instrukcja Użytkownika Pobierz pdf (Strona 51)

PCB-4000 1+1 Phase Combiner Revision 2

Serial Remote Control MN/PCB4000.IOM

5–3

5.2.2 Packet Structure

Controller-to-Target

Start of Packet Target Address Address Delimiter Instruction Code Code Qualifier Optional Arguments End of Packet

ASCII code 60

(1 character)

(4 characters)

ASCII code 47

(1 character)

(3 characters)

= or ?

ASCII codes 61 or 63

(1 character)

(n characters)

Carriage Return

ASCII code 13

(1 character)

Example: <0412/MUT=1{CR}

Target-to-Controller

Start of Packet Target Address Address Delimiter 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 codes

61, 63, 33, or 42

(1 character)

(From 0 to n

characters)

Carriage Return, Line

Feed

ASCII codes 13,10

(2 characters)

Example: >0412/MUT={CR}{LF}

5.2.2.1 Start of Packet

• Controller‐to‐Target–Thisisthecharacter‘<’(ASCIIcode60).



• Target‐to‐Controller–Thisisthecharacter ‘>’(ASCIIcode62).



Becausethisisusedtoprovideareliableindi cationofthestartofpacket,thesetwocharactersmaynotappearanywhereelsewithin

thebodyofthemessage.

5.2.2.2 Target (Base) Address

Upto9,999devicescanbeuniquelyaddressed.InbothEIA‐232andEIA‐485applications,thepermissiblerangeofvaluesis1to9999.

ItisprogrammedintoaTargetunitusingserialremotecontrol.



1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 87 88

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