User Manual

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Connecting the VS-88SDI
12
Figure 3: DIP-Switch Settings
Table 4: DIP-Switch Settings
DIPS
Function
Description
RS-485 Term RS-485 line termination OFF for no RS-485 line termination
ON for RS-485 120Ω line termination
PROG Firmware update Set ON only to update device firmware
MACH # 1, 2, 3, 4 Self Address Sets the MACHINE # (see section 6.1.1)
The RS-485 TERM DIP-switch is used only when the RS-485 port is
connected (see section
6.2.2). The first and last units on the RS-485 line
(for example, the controller and the last VS-88SDI) 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.
6.2 Connecting a PC or Controller to the RS-485 Port
You can operate the VS-88SDI via 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.
To connect a device with a RS-485 port to the VS-88SDI:
• Connect the A (+) pin on the RS-485 port of the PC to the A (+) pin on
the RS-485 port on the rear panel of the VS-88SDI
• Connect the B (–) pin on the RS-485 port of the PC to the B (–) pin on
the RS-485 port on the rear panel of the VS-88SDI
• Connect the G pin on the RS-485 port of the PC to the G pin on the
RS-485 port on the rear panel of the VS-88SDI
6.2.1 Setting the Address Switches
To set the address DIP-switches:
• Assign Master Machine #1 to the master unit with the address
0 or 1 set in the DIP-switches
• Assign a unique Machine # from 2 to 15 for each VS-88SDI slave
unit using
Table 3. The units do not have to be sequentially
numbered but they must have unique addresses