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3.4. PHU Compatibility Mode
PHU compatibility mode is the mode which can control a Signal Tower by using the same commands as the PHU
by connecting a USB cable with this product and transmitting PHU-3 type control commands to this product.
3.4.1.
Frame Format
The turning on and off of each Signal Tower color can be controlled by sending data, in the following format, to
this product by transmitting data from the connected equipment.
The last three data bits are for the Signal Tower lighting control.
[Transmission Example]
In this example
turned off.
• Send Data
Data
HEX Code
Byte Count
1Byte
7
6
5
4
3
0 0 0 0 0 1 0 1
• Reply Data
No reply data.
• Communicate with the communication configuration as per the contents of "3.1.
Communication Set Up".
Caution
• Do not connect the RS-232C cable during operation in PHU Compatibility Mode. It may
cause a malfunction.
• There is no compatibility with the driver software of the PHU-3 Model. Install the exclusive
MEMO
driver for this product separately.
, the Signal Tower red and green are switched on and the amber is
05H
2
1
0
Red Unit
Amber Unit
Green Unit
1: Lighting on
2: Lighting off
3
23
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