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P
2: S
A RT
E RI AL
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
S e r i a l C a b l e P i n o u t
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.
Flow Control
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.
Phone (518) 899-1254 • Fax (518) 899-1251 •
/E
THE RNE 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
Pin (VRQ Side)
2
3
5
7
8
Parameter
Value
Baud
9600
Data Bits
8
Stop Bits
1
Parity
None
None
VideoReQuest Protocol Guide v1.1.2 - 5/18/04
P
ROTOCOL
Pin (Control Side)
3
2
5
8
7
Value
Value
19200
38400
8
8
1
1
None
None
HW
HW
www.request.com
3 -
-
Value
57600
8
1
None
HW
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