VICI SVI - Manual (Page 14)

10
Fixed Syntax Commands
These commands are used only with the fixed syntax as they are listed
below. There are no valve or position variables.
Command: R
Initiates a RESET procedure. Once initiated, the device requires up
to four seconds before it responds with a reset acknowledgment.
Command: EON
Initiates ECHO ON. After the receipt of this command, the SVI will
echo a serial port response to all valve positioning commands.
Command: EOF
Initiates ECHO OFF. After the receipt of this command, the SVI will
only echo a serial port response for valve functions which are
configured for feedback and fail to complete a positional command.
Multiple Device Mode Commands
All commands transmitted to any SVI set for the Multiple Device Mode must
be prefaced by the ID of that SVI. Otherwise the syntax conventions
exactly parallel those illustrated in the previous examples. The ID is se-
lected on CO11 as described in the section “Multiple Device Mode”, on
page 2.
Examples
Command: 7V510
Instructs SVI 7 to turn valve 5 to Position 10.
The first variable, “7”, is the SVI ID. The second variable is the
command letter, which tells the SVI that this is a Valve positioning
command. The third character is the valve number, telling the SVI
that valve 5 is to be controlled. The last two characters represent
the position to which the valve will be turned.
Command: 2V3A
Instructs SVI 2 to turn valve 3 to Position A.
In this example, the ID is 2. The command letter indicates that this
is another Valve positioning command, for valve number 3. The
position variable indicates that the valve will be turned to Position A.
This command would function equally well as 2V3L.
Command: 0S1
Requests SVI 0 to give the current position status of valve 1.
The first variable indicates that the device which has an ID of 0 is
being addressed. The S is the command letter for Status request,
and the 1 indicates that valve 1 is to be queried. There is no
positional information needed as this command is a query for
current valve positional status.
Communicating with the SVI Using Vcom