Appendix 9 - Protocol For Remote Controlling Dvr - PACOM PDRH16-RMT series User Manual

Appendix 9 — Protocol for Remote Controlling DVR
Message Format
<BOM><ID>:<Class>:<Code>[:Operands]:<Checksum>[EOM]
where
Symbol Value
: :
<BOM> @
<
<ID> 00~99
<Class> DR
<Code> AA~zz
<Operands>
<Checksum> 00~99
*
[EOM] ^J^M
*All digits are used in decimal format.
*Letters are case sensitive.
Control Flow
Every transaction consists of one command and one reply.
Characters transmitted before <BOM> are ignored.
The format of operands is defined independently for each op-code.
The <BOM> received before <Checksum> of the previous message resets interpretation: i.e., discards the
previous message. EXCEPTION: in case of text input, none of characters within specified length has special
interpretation.
Common Reply
Reply code
ok
er
General Functions
Function
Power Off
Time Setting
LogIn
LogOut
Cursor Control
Function
Tab
Enter
Text Input
Field delimiter
Beginning of message (for command)
Beginning of message (for reply)
Device ID
Device Class ("DR" for DVR systems)
Op-code (see below)
Optional operands defined for each operation
Checksum (sum of ASCII codes before checksum discarding overflow)
No checksum
End of message (optional: only for convenience of users using general terminal)
Reply data
0000~9999
Code
PO
TM YYYYMMDDHHMMSS
LI 01~16:****:01~08:****
LO
Code
TB F/B(direction)
EN
TI 01~99(length):string
Description
Error: return error number
ii
Operands
iii
Operands
iv
Digital Video Recorder
Description
Reply Reply data
Reply Reply data
i
117