Manufacturing of RS-423
Belden manufactures RS-423 cables. See part numbers 9791 and 9925-9938.Plenum RS-423 Cable
Belden does not make Plenum RS-423 cables as a standard item.Run Length of RS-423 Cable
The maximum permissible length is a function of several variables including data rate and noise. The appendix of the RS-423 standard contains application guidelines including information related to cable length.