Chapter 1 Introducing the PA912 Module
6F8C1259
1.1.3 Transmission operation upon error
When the controller is failed to operate properly or an error is detected on the
TC-net I/O loop, one of the following three output modes can be specified as
the output operation for the PROFIBUS slave I/O devices. The transmission
operation upon error can be specified via the nV-Tool by using a module
parameter "Transmission operation at emg." of the PA912-M/PA912-NM module.
The setting method is described in "Chapter 3: Setting."
Table 1-2 Transmission operation upon error
Mode Transmission operation
Stop Halts the transmission operation.
Trans 1 Continues the transmission operation by setting the
transmission data to the value immediately before the error
occurrence.
Trans 2
(Clear mode)
PA912 force the Slave module to change the Clear mode
with the command without data(0 length data and 0 data) .
As Clear mode, How the Slave module behave is depend on
the Slave venders specification.
Figure 1-5 Setting screen of transmission operation upon error
CAUTION
Pay due consideration to the system operation
b
efore specifying the operation mode of the PA912
upon error.
Mandatory
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