Black Box AVX-VGA-TP-CSRX, Руководство пользователя, Страница: 39 / 48

724-746-5500 | blackbox.com
Page 39
Appendix C: Text-Based RS-232 Protocol
Appendix C: Text-based RS-232 Protocol of MediaCento
™
VX
RS-232 Communication setting:
Baud rate: 38400
Data bit: 8
Parity bit: 0
Stop bit: 1
Flow control: none
Letter case: none
The command set has the following format (Command is ASCII format).
(a1.a2.a3.a4.a5.a6)XXX=n,m[CR]
a1.a2.a3.a4.a5.a6
(Optional) The Address packet of the destination device node, variable length, with
a maximum length of 6. This is required when sending a command to destination
node.
When command line doesn’t include an Address packet that indicates this, the
command will be broadcasted to all nodes.
Each byte of an address packet is hexadecimal-text, low nibble is the TX port index
(zero-based), high nibble is Expanded port index (1-based).
The device tree has to follow the rules listed below:
• The first layer only can expand to four splitters.
• You can only can extend to four layers of Repeaters in the device tree.
• You can only can expand one Splitter on a Repeater’s expanded port.
For example, (see the device tree listed below):
(00) – root node, a Splitter
(10) – the node on the expanded port of node (00), a Splitter
(20) – the node on the expanded port of node (10), a Splitter
(30) – the node on the expanded port of node (20), a Splitter
(30.00), a Repeater — The node on the TX port 1 of node (30)
(30.10), a Splitter — The node on the expanded port of node (30.00)