Specifications for PTI RS485 Wiring

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The following shows a typical RS485A type of communications used for electronic devices. Generally, limited to four thousand total feet of wire length. Used for connecting the Falcon XT to AI Devices. wiring scheme. This is shown in order to give the installer an idea of equipment layout and wire planning. Each site will be different and must be planned accordingly.

PTI RS485 Wiring.png
  1. Splices should be kept to a minimum. RS485A type of communications used for electronic devices. Generally, limited to four thousand total feet of wire length. Used for connecting the Falcon XT to AI Devices. splices should be made using 3M U-Type connectors and crimpers only. It is better to pull a single new cable instead of splicing. See the Correct Splicing Techniques page for more information.
  2. During retrofits and change-outs, we do not recommend using existing wire that has already been pulled on a site. It is impossible to know the condition of this wire and the site may experience costly troubleshooting and service calls due to problems with older wiring or wire types that are not recommended by PTI Security Systems.
  3. Maximum distance for the total RS485A type of communications used for electronic devices. Generally, limited to four thousand total feet of wire length. Used for connecting the Falcon XT to AI Devices. netwok is 4000 feet.
  4. Engineering Specifications for RS485A type of communications used for electronic devices. Generally, limited to four thousand total feet of wire length. Used for connecting the Falcon XT to AI Devices. recommend that the wire be run in series from the controller to the first AI device, then from the first AI device to the second, from the second to the third, and so on.
  5. Due to site layout considerations, it may not be possible to go from one device to another in order. At times a second line must be run from the controller to a different section of the property.
  6. It is important to avoid star patterns in the wiring, where an individual cable is run to each AI device as this makes future service and troubleshooting almost impossible.