Burst Electronics MCG-3 - Manual (Page 48)

47 MCG-3 Color Micro Character Generator
S S S S SR S R S R S R S R SET R ET R ET R ET R ET RE E E E ES S S S SP P P P PO O O O ON N N N NS S S S SE E E E ES S S S S
PURPOSE: Turns responses from commands on or off.
FORMAT: S S S S SR,x R,x R,x R,x R,x
x = 2 “>” prompt
x = 1 Responses on
x = 0 Responses off
DESCRIPTION: When responses are set to off, the corresponding unit
will not send ANY data to the PC but will still accept commands. Also,
the MCG-3 front panel controls become inoperative. There are
basically three situations where you might want to use this command.
First, if you want to send commands to more than one unit at a time
(see the example below). This way, the units on the network won’t try
to all talk at once. Second, if you want to send commands at high speed
(9600 baud - no wait between characters). Because the unit won’t have
to spend time echoing back received characters or processing the
signals from the front panel controls, it will have more time to process
incoming characters at high speed. The third situation is to lockout the
front panel controls on the MCG-3 to prevent unauthorized use.
If Set R Set R Set R Set R Set Resp esp esp esp esponses onses onses onses onses is set to 2 (S (S (S (S (SR,2) R,2) R,2) R,2) R,2) then after receiving a line of data,
the unit will only respond with a “>” prompt. The purpose of this is to
allow for faster data transfers at 9600 baud (although you can use other
baud rates). The “>” character acts as a line pacing character. When the
unit receives a line of data, after processing that data and when the unit
is ready to receive more data, the unit will send a “>” character. At this
time the unit is ready for another line of data. This method of data
transfer is compatible with most terminal programs that support ASCII
data transfers.
If for some reason your software should miss the “>” character (line
noise, etc.), the unit will not send another “>” character. Your software