Videoswitch Vi-Q4/C3, Руководство пользователя

Страница: 20 / 26

Vi-Q4/C3 User Manual
Viq602c
4.1 RS485 Commands
Key:
VP Vi-Q4/C3 Video Processor
EXT External controller such as PTDI, keyboard, PC
SS Source address byte
DD Destination address byte
XX..XX Extended data bytes (0 to 128 bytes permitted). If representing an ASCII string, two hex numbers
are used to encode each ASCII character within the string (e.g. “0123 ” is coded as 30313233).
CC Command byte
PP Parameter byte
0xNN Hex number
Command
Name Command
Originator CC PP Description
Poll EXT 0xBB 0x00
to
0xFF
This command should be send to the Video Processor (VP)
regularly to hold off the COMMS alarm. The PP value must
change (e.g. increment) each time the command is issued
Ack VP 0xBA 0x00
to
0xFF
This command is send by the VP to acknowledge other
commands. The source address is VP address, DD is a copy
of the original command's source address,SS. This value can
be used to identify the command instead of being a fixed
source number. PP is the module 256 sum of all bytes in the
original command.
Set screen
format EXT 0x10 0x11
0x17
0x80
to
0xA0
Set displayed screen format to previous number
Set displayed screen format to next number
Set displayed screen format to 0 to 32
Request
configuration EXT 0x43 0x02 This command will cause the VP to send its whole
configuration as a series of Configuration Item commands
Configuration
Item VP 0x42 0x02 The extended data XX..XX in this reply command contains an
ASCII string representing a menu configuration item and its
value e.g. “Format=5”
Save
configuration EXT 0x42 0xE1 This commands causes the VP to save the entire
configuration to non-volatile memory. The memory has a
limited life-time of 1 Million write cycles (minimum), so this
command should not be issued too frequently.
Log-in EXT 0x46 0x00 The password represented as an ASCII string is passed as
extended data, XX..XX. If a valid password is received, this
enables subsequent access to the menu system.
Request Serial
Number EXT 0x43 0x51 Issuing this command to the VP results in a Serial Number
reply command
Serial Number VP 0x44 0x51 This reply command from the VP includes the serial number
Videoswitch Ltd 16/26 07/09/15