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The 4K Ultra HD HDMI & VGA KVM over IP supports RS-232 pass-through, allowing the
control of remote RS-232 devices. The Sender and Receiver unit which are being used to
pass-through the RS-232 data must be set to the same baud rate as the RS-232 host and
client.
In the example below, an RS-232 device has been connected to Receiver R1. We want to
control this product from Sender unit S3, using an automation control device. The channel
numbers are listed in blue.
Figure 2.6 - Basic RS-232 connection
Table 2.1 - RS-232 settings for an arbitrary RS-232 device.
Description Setting
Baud rate
19200
Data bits
8
Parity
None
Stop bits
1
Hardware flow control
None
Confirm that the same RS-232 settings are assigned to both the Sender and Receiver
units. To do this, access the Web interface on both the required Sender unit and Receiver
unit to set the proper RS-232 settings. Follow the instructions on the next page.
B
asic Oper
ation
LAN
Receiver unit
Receiver unit
Out
Out
Sender unit
Sender unit
Sender unit
In
In
In
RS-232 device
Automation
Control Device
12
12
02
05
09
R
1
S
1
S
2
S
3
R
2
Using RS-232