KRAMER: SIMPLE CREATIVE TECHNOLOGY
Serial Control of the VA-8xl or VA-16xl
12
6.2.1.2 Connecting the RS-485 Control Interface
1
To connect an RS-485 connector on one VA-8xl or VA-16xl unit to an
RS-485 connector on another unit:
1.
Connect the “+” PIN on the first VA-8xl or VA-16xl unit to the “+” PIN
on the second VA-8xl or VA-16xl unit
2.
Connect the “-” PIN on the first VA-8xl or VA-16xl unit to the “-” PIN
on the second VA-8xl or VA-16xl unit
3.
If shielded cable is used for an RS-485 connection, connect the shield to
the Ground PIN.
Figure 10 illustrates the RS-485 line that connects:
•
Between each VA-8xl / VA-16xl unit
•
To the PC via a Kramer Tools VP-43xl Interface Converter (connect the
PC’s DB 9 COM port to the “RS-232 in” DB9F port on the VP-43xl. Next,
connect the RS-485 port on the VP-43xl to the RS-485 ports on the VA-8xl or
VA-16xl units)
Figure 10: An RS-485 Control Interface Setup
1 Choose the RS-485 control interface, to operate the VA-8xl or VA-16xl from an extended distance of up to 1200 meters