VICI SVI - Manual (Page 7)

3
Installation
CAUTION: For proper startup, make sure that all the
jumper settings in the SVI are correct, and that all exter-
nal devices have been disconnected or are turned off
before applying power to the SVI.
Interfacing the SVI to a PC
The SVI has two communication port connectors labeled “COM 1” and “COM
2”. The RS-232 cable provided connects the COM 1 connector on the SVI to
the serial port connector on the PC. If the computer serial port connector is
a DB-25 connector, then a DB-25 FEMALE to DB-9 MALE adapter connector
or cable is required. Most computer or electronic stores carry this adapter.
The RS-232 cable with Male and Female DB-9 connectors must be wired
“straight through”, or pin to pin;
i.e., Pin 2 to Pin 2, Pin 3 to Pin 3, etc.
Only Pins 2, 3, and 5 are used by the SVI; they are functionally defined
as TRANSMIT, RECEIVE, and GROUND, respectively,
from the SVI
perspective.
TWO POSITION
ELECTRIC ACTUATORS
MULTIPOSITION
ELECTRIC ACTUATORS
RS-232 INTERFACE CABLE
HOST COMPUTER
TWO POSITION
INTERFACE CABLE
INTERFACE CABLES
SUPPLIED WITH
MULTIPOSITION
ELECTRIC ACTUATORS
ANSLEY
CONNECTORS
Figure 1: SVIs daisy-chained to a single host computer
Figure 2: SVI interconnection diagram