PTI Security Systems
Wireless RS485 Installation and Troubleshooting Instructions
4/8/14
Rev A
Page 4 of 4
existence. While they are transparent, they do affect the performance of the system and in
some cases parameters must be adjusted.
The impact to system performance is the time required for data to be transferred between
the controller and the device. Additional time is required since the data must be gathered
into a packet and transferred across the wireless link before it can be sent to the remote
device. You will notice longer response times when using the Wireless RS-‐485 modems.
This is normal.
Note:
1.
DIP Switch 2 has been disabled preventing this switch from erasing the
preconfigured settings.
2.
Bias resistors (4.7K) have been added to the modem for proper operation with the
RS-‐485 network is in the idle state (neither the controller nor remote device is
transmitting).
Custom Configurations
Custom configurations can be implemented using the tools and information provided on
the Digi International Inc. website. Since we have disabled the ability to restore the modem
to Digi factory defaults, you must connect with the following settings:
•
Syscon (PN 2000002Kit) – Use 2400 Baud, 1 stop bit and no parity
•
Falcon Base Unit or Falcon XT (PN P485MODEMASY) – Use 9600 Baud, 2 Stop bits
and no parity
