CRS-500 1:N Redundancy System
Revision 4
Serial Interface Operation
10–4
MN-CRS-500
10.2.5 Packet Structure
Table 10-1. Controller-to-Target Packet Structure
Start of Packet Target Address Address Delimiter
Instruction Code
Code Qualifier
Optional Arguments
End of Packet
Character
<
/
= or ?
Carriage Return {CR}
ASCII Code
60
47
61 or 63
13
# Characters
1
4
1
3
1
n
1
Controller-to-Target Examples:
(COMMAND) <0000/RSH=30{CR}
(QUERY) <0000/RSH?{CR}
Table 10-2. Target-to-Controller Packet Structure
Start of Packet Target Address Address Delimiter
Instruction Code Code Qualifier Optional Arguments
End of Packet
Character
>
/
=, ?, !, or *
Carriage Return {CR},
Line Feed {LF}
ASCII Code
62
47
61, 63, 33 or 42
13, 10
# Characters
1
4
1
3
1
From 0 to n
2
Target-to-Controller EXAMPLE:
(QUERY RESPONSE) >0135/RSH=30{CR}{LF}
10.2.5.1
Start of Packet
These characters are used to provide a reliable indication of the start of packet. They must not appear anywhere else in the body of the
message:
•
Controller-to-Target:
This is the “<” character (ASCII code 60). It is also known as the “less than” character.
•
Target-to-Controller:
This is the “>” character (ASCII code 62). It is also known as the “greater than” character.
Summary of Contents for CRS-500
Page 24: ...CRS 500 1 N Redundancy System Revision 4 Preface x MN CRS 500 Notes...
Page 38: ...CRS 500 1 N Redundancy System Revision 4 Introduction 1 14 MN CRS 500 BLANK PAGE...
Page 60: ...CRS 500 1 N Redundancy System Revision 4 Installation 4 6 MN CRS 500 BLANK PAGE...
Page 219: ......
Page 220: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...
