Under review

Serial Port - No Ack Error

Nuno Filipe 4 months ago in bOS Configurator / Devices updated 4 months ago 2

I'm trying to connect a Paradox security system to a CC Grinder, through a Paradox PRT3 module USB (COM3), and I'm getting a "Error connecting to device - No Ack" message" 10 seconds after connection, keeps trying to connect.

Can't figure if its a Windows problem (tried several configurations for flow control on port settings), Paradox configuration (Serial Port ON, Automation ON, ASCII Protocol, 9600br) or CC.

Any ideas?

Under review


did you try these settings, found in the paradox manual? 

*From paradox manual*

Programming Sections
The following describes the programming sections which must be set when the Printer Module acts as an interface between a control panel
and a home automation module using the ASCII Protocol.
To access the Printer Module’s programming mode:
STEP 1: Press and hold the [0] key.
STEP 3: Enter section [953] (DGP-848) / [4003] (EVO).
STEP 4: Enter the Printer Module’s 8-digit [SERIAL NUMBER].
STEP 5: Enter the 3-digit [SECTION] you want to program.
STEP 6: Enter the required data.
The Printer Module can also be programmed using the WinLoad Security Software (V2.62 or higher) or using the control panel’s Module
Broadcast feature. Refer to the panel’s Reference & Installation Manual for more details. Please note that the serial number can be located
on the Printer Module’s PC board.

Best regards.


I'm really using Babyware software from Paradox to program the security system and the APR3-PRT3 module is correctly added to the system and recognised by serial number.

The 3-digit [SECTION] programming codes for this module refer to the following parameters:

016/1 Serial Port Enabled (checked)

016/4 OFF:Send Event; ON:Residential Automation (Checked)

016/2/3 Baud Rate (9600)

016/5/6 Residential Automation (ASCII Protocol)

(in parenthesis my configuration, my translation from Portuguese - names may differ)

On the Paradox software there aren't any other parameters to configure for the serial port.

(in fact I'm using the USB port, recognised as COM3 on the Grinder Windows. Tomorrow i'll try another serial to USB adaptor on the serial port of the module)