VideoReQuest Protocol Guide v1.1.2 - 5/18/04
Phone (518) 899-1254
•
Fax (518) 899-1251
•
www.request.com
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3 -
P
ART
2:
S
ERIAL
/E
THERNET
P
ROTOCOL
This section describes how to communicate with the VideoReQuest via Ethernet or Serial.
Ethernet and Serial protocols are identical in terms of sending commands and receiving
feedback. For simplicity, we will refer to Ethernet and Serial communication as Serial, though
it can be used for Ethernet as well.
R e a r S e r i a l P o r t P i n o u t
Pin
Purpose
1
Not Used
2 Receive
3 Transmit
4
Not Used
5 Ground
6
Not Used
7 RTS
8 CTS
9
Not Used
S e r i a l C a b l e P i n o u t
Pin (VRQ Side)
Pin (Control Side)
2 3
3 2
5 5
7 8
8 7
C O M S e t t i n g s
The
rear serial port
is used for integrating the VideoReQuest with a control system. These
settings can be found by going to
Menu
Configuration
Control Port
on the
VideoReQuest.
Parameter
Value
Value
Value
Value
Baud
9600
19200
38400
57600
Data Bits
8
8
8
8
Stop Bits
1
1
1
1
Parity
None
None
None
None
Flow Control
None
HW
HW
HW
U s i n g E t h e r n e t
The default port used to communicate with the VideoReQuest via Ethernet is port
3663
. If
you open a connection to the VideoReQuest’s IP address at port 3663, you can communicate
with the unit just as if you connected serially.
