repeat rate for this polling is set by the
POLL dLAY
function. If
POLL INPt
is set to
OFF
then no characters
will be transmitted and the other polling functions will not be seen. If set to on then the characters selected will be
transmitted at the rate selected by the
POLL dLAY
function. This ability to poll is used when the instrument is to
display data from a source which requires a polling command before it will communicate.
5.65
Polling delay time
Section:
POLL
Display:
dLAY
Range:
0.0
to
10.0
Default Value:
1.0
Default Access Level
CAL
Function number
4d17
Used only when
Code
function =
UAL
and
POLL INPt
function is set to on. When the polling facility is being
used the
POLL dLAY
function sets the repeat rate, in seconds, of the poll command. The time may be set from
0.0
seconds (as fast as the baud rate will allow) to
10.0
seconds.
5.66
First polling character
Section:
POLL
Display:
P.Ch.1
Range:
-1
to
255
Default Value:
-1
Default Access Level
CAL
Function number
4d30
Used only when
Code
function =
UAL
and
POLL INPt
function is set to on. Each of the eight poll command
characters can be set from
-1
to
255
decimal. If set to
-1
then the character is ignored, if set to any other number
then the equivalent ASCII character for that number will be sent. Characters 0 to 31 are special control characters
such as “carriage return” and “start of text”. Use as many
P.ch
characters as required by your system and set
the remaining characters to
-1
so that they are ignored. For example to poll an instrument with the command
<
STX
>
P!
<
CR
>
(for AIC instruments this means get primary display value from unit with address 1) set
P.ch.1
to 2 (this correspond to
<
STX
>
),
P.ch.2
to 80 (this corresponds to P),
P.ch.3
to 33 (this corresponds to address
1),
P.ch.4
to 13 this corresponds to
<
CR
>
,
P.ch.5, P.ch.6, p.ch.7
and
p.ch.8
are all set to -1.
5.67
Second polling character
Section:
POLL
Display:
P.Ch.2
Range:
-1
to
255
Default Value:
-1
Default Access Level
CAL
Function number
4d31
Second polling character, refer to function
LD5RSMAN-2.0-0
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