sing a diagnostics error interrupt. Different types of
diagnostics are available that you can parameterize
channel-granularly.
Chapter Parameters of the analog
on-board I/O (Page 122)
Hardware interrupt You can react to process events (such as negative/positive
exceeding of specific limits) through the
configuration of a hardware interrupt. Hardware interrupts
can be parameterized channel-granularly.
? Chapter Parameters of the analog
on-board I/O (Page 122)
? Chapter Structure of a data record
for input channels of the analog
on-board I/O (Page 166)
? STEP 7 online helpOnce the CPU has processed the digital signal, a DAC
(digital-to-analog converter) integrated in the analog onboard
I/O module converts the output signal to an analog
current or voltage value. The resulting value of the
output signal corresponds to the output value with
which the analog on-board I/O module controls the
analog actuators.
? Chapter Analog value processing
? Analog value processing function
manual
(http://support.automation.sieme
ns.com/WW/view/en/67989094)
Integrated output types With the selection of the type of output you specify
whether the digital-to-analog converter is to convert the
output signal into the type of output "Current" or "Voltage".
The output can be selected by individual channeWith the selection of the type of output you specify
whether the digital-to-analog converter is to convert the
output signal into the type of output "Current" or "Voltage".
The output can be selected by individual channel.
Configurable diagnostics The analog on-board I/O module can diagnose errors.
The module reports the diagnosed state to the CPU
using a diagnostics error interrupt. Different types of
diagnostics are available that you can parameterize
channel-granularlyYou have the option of reassigning parameters for the
analog on-board I/O module in RUN (for example,
measuring ranges of individual channels can be modified
in RUN without affecting the other channels).
? Chapter Parameters of the analog
on-board I/O (Page 122)
? Chapter Parameter assignment
and structure of the parameter
data records of the analog onboard
I/O (Page 166)
Support of the value status
(Quality Information, QI)
Value status = 1 ("Good") indicates that the value of
the assigned input at the terminal is valid.
Value status = 0 ("Bad") indicates that the read value
is not valid.
Chapter Address space of the analog
on-board I/O (Page 114)You have the option of reassigning parameters for the
analog on-board I/O module in RUN (for example,
output ranges of individual channels can be modified
in RUN without affecting the other channels).
? Chapter Parameters of the analog
on-board I/O (Page 122)
? Chapter Parameter assignment
and structure of the parameter
data records of the analog onboard
I/O (Page 166)
Support of the value status
(Quality Information, QI)
Value status = 1 ("Good") indicates that the process
value specified by the user program is correctly output
at the terminal.