Maximum RS-232C cable length is 50 feet (15.25 meters).
Maximum RS-485 cable length is 4000 feet (1220 meters).
Maximum extended motor cable length is 200 feet (61 meters), but cables longer than 50 feet (15 meters) may degrade performance. Refer to a Zeta User Guide for the appropriate gage of the cable for the desired length.
Maximum Encoder cable length is 50 feet (15 meters). This can be extended by using a line driver that is easy to come by at electronics stores.