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.
i
