Kramer Electronics VS-88FO - Manual (Page 16)

VS-88FO - Connecting the VS-88FO 13
After changing the address, reset the device by turning it OFF and ON.
5.2.2 Setting the DIP-Switches
When controlling a unit using the RS-232 or RS-485 ports, set the DIP-switches on
the rear of the unit accordingly. Figure 5 defines the DIP-switches.
The default address is 0. All DIP-switches are OFF.
Figure 5: DIP-Switch Settings
DIPS Function Description
RS-485 TERM RS-485 line
termination OFF for no RS-485 line termination
ON for RS-485 120

line termination
PROG Firmware update Set ON only to update device firmware
MACH # 1, 2, 3, 4 Self Address Sets the MACHINE # (see Section 5.2.1 )
The RS-485 TERM DIP-switch is used only when the RS-485 port is connected
(see Section
5.3
). The first and last units on the RS-485 line (for example, the
controller and the last VS-88FO) must be terminated. The units in between must
not be terminated.
Set the PROG DIP-switch ON only while updating the unit firmware, otherwise the
switch must be OFF.
5.3 Connecting a PC or Controller to the RS-485 Port
You can operate the VS-88FO over the RS-485 port from a distance of up to 1200
meters (3900ft) using any device equipped with an RS-485 port (for example, a
PC). For successful communication, you must set the RS-485 machine number
and bus termination.
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