Kramer Electronics VP-4x8AK - Manual (Page 23)

Using the VP-4x8AK
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5. Set the RS-485 TERM DIP-switch ON on the first and last VP-4x8AK units
(terminating the RS-485 line at 120
Ω). Set the RS-485 TERM DIP-switch OFF
on the other VP-4x8AK units.
Machine # 1 (Master)
Machine # 2
Machine # 16
Up to 16
Units
Figure 10: Control Configuration via RS-232 and RS-485