Kramer Electronics VP-4x4K - Manual (Page 15)

VP-4x4K - Connecting the VP-4x4K 11
5.4 Cascading Machines
You can cascade up to 16 VP-4x4K units with control from a PC or serial
controller.
To cascade 16 individual VP-4x4K units via RS-485, as illustrated in the example
in Figure 5 , do the following:
1. Connect the sources and acceptors (see Section 5.1 ).
2. Connect the RS-232 port of the first VP-4x4K unit to a PC.
3. Connect the RS-485 terminal block port on the first VP-4x4K unit to the
RS-485 port on the second VP-4x4K unit and so on, connecting all the
RS-485 ports.
4. Set the first VP-4x4K unit as Machine # 1 and the following VP-4x4K units
as Machine # 2 to Machine # 16 (see Section 6.4 ).
5. On the first and last VP-4x4K units, set the RS-485 TERM DIP-switch to ON,
terminating the RS-485 line at 120Ω (see Section 5.6 ), and set this DIP-
switch to OFF on the other VP-4x4K units.