ttt
= time, in seconds, until the measurement data is available
nn
= the number of values to be returned when one or more subsequent
D!
commands are
issued.
See the following example. A data logger has three sensors wired into terminal C1. The sensors
are addresses
X
,
Y
, and
Z
. The data logger will issue the following commands and receive the
following responses:
Table B-3: Example aC! sequence
XC!
The data logger makes a request to sensor X to start
a concurrent measurement.
X03005<CR><LF>
Sensor X immediately indicates that it will have 5
(05) values ready for collection within the next 30
(030) seconds.
YC!
The data logger makes a request to sensor Y to start
a concurrent measurement.
Y04006<CR><LF>
Sensor Y immediately indicates that it will have 6
(06) values ready for collection within the next 40
(040) seconds.
ZC!
The data logger makes a request to sensor Z to start
a concurrent measurement.
Z02010<CR><LF>
Sensor Z immediately indicates that it will have 10
values ready for collection within the next 20 (020)
seconds.
ZD0!
After 20 seconds have passed, the data logger starts
the process of collecting the data by issuing the first
D
command to sensor Z.
Z+1+2+3+4+5+6+7+8+9+10<CR><LF>
Sensor Z immediately responds with the sensor
address and the 10 values.
XD0!
10 seconds later, after a total of 30 seconds have
passed, the data logger starts the process of
collecting data from sensor X by issuing the first
D
command.
X+1+2+3+4+5<CR><LF>
The sensor immediately responds with the sensor
address and the 5 values.
TempVue 20 SDI-12 PT-100 Class A, Precision Air Temperature Sensor
24
