CS-Bus Networks and Splitters?
When can Splitters be Used?
Splitter are typically not permitted in CS-Bus wiring schemes. The CS-Bus requires a daisy-chain configuration with the output of one device running into the input on the next sequential unit. The only exception for when splitter can be use and only certain splitters is when a Converging Systems' keypad in "inserted" into the bus between two adjacent (i.e., two ILC-x00 controller with INs and OUTs directly connected to each other) and only when the stub/wire urning out of the 3rd port of splitter is not longer than 1 foot.
- Recommended Splitter Types
Typical RJ-25 splitter in the market that are sold for telephony purposes (with "Swapped Splitters") have a pin-out of 1-6, 2-5. 3-4. 4-3, 5-2, and 6-1. These "Swapped splitters" will not work with CS-Bus applications. Converging Systems markets a CS-Bus compatible splitter ("Straight Splitter") that should be used that has straight wiring (i.e. 1-1, 2-2, 3-3, 4-4, 5-5, 6-6) instead.
- Max length of stub wire running to and from Splitters?
Splitters should only be used with keypads provided the stub wire from the splitter to the keypad is less than 2 feet. Utilization of a splitter to add a T to the network (to which two runs of ILC-xx0 controllers would be connected), will cause the CS-Bus networks to fail. Symptoms would be intermittent communication, data corruption and similar network failures.