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AT3600 General Tips and FAQ

Hints and Tips on using the AT3600

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Unit Boots with "Main Operation Suspended"

My Unit Boots with "Main Operation Suspended". What can i do?

There can be several possible causes of this

a, Incorrectly inserting RS232 comms cable into the Remote port in the back of the unit.
Check that nothing is plugged into the remote port of the unit, as misuse of  the control lines can prevent correct booting. 

b, Faulty Footswitch in remote port / or booting with footswitch depressed.
Similar to the above.

b, Corrupt firmware.
In some cases the firmware may have corrupted.
The standard "AT36.abs" firmware update file will not work in this case.
If this happens contact us and request a customized firmware  file and give us the serial number of your AT3600 unit (TCyy/xxxx)
We will supply a file "AT36xxxx.abs" where xxx is the serial number of your unit.
The editor will allow this to be downloaded and it will fully flush and reprogram the operating system.

 AT3600 and ATi Barcode Readers

The original recommended unit is the HP HBSW8300 Smart Wand . Although olbsolete, It is still available in some places.

Known good models



Unit is supplied with its own external PSU.
It also requires a 9 way D M-M adapter, as both the AT3600 port and the barcode lead are 9way D female.


General advice

Which ever Barcode reader unit is used, it must support the 19200 Baud rate used by the AT3600. The ATi uses a slower 9600 Baud rate.
Your barcode reader manual should have barcodes supplied to scan to change the settings in the reader.

The Barcode settings for the HP device are published in the ATi manual (8.3.1)  +AT3600 user manual (8.2.1)

AT connector - 9 pin female D type connector (so the wand should have a 9 pin D male connector)
pin2 = RX, pin3 = TX
pin7=   0V, pin 9 = 5V (not needed if your barcode has its own external PSU)

Baud rate AT3600 = 19200 , ATI = 9600
Parity None
Stop bits 1
Data bits 8
Flow control None


9 way D type M-M adapter.

Many of the popular legacy Readers should work if programmed correctly.
However we have found that most readers have a 9 way D female socket lead, and the AT36/At has also a female socket.
In this case a simple adapter such as RS Component 218-239 can be used.