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Output value setting for fieldbus error
Set the output value of the I/O module for each case, such as when the CPU module status of the DP-Master changes or a
fieldbus error occurs.
The output value changes depending on the following two settings.
• NZ2FT-PBV parameter "Output behaviour on fieldbus error"
• Parameter "Substitute value" for each I/O module
However, the data sent from the NZ2FT-C24 to the external device is not affected by the setting of the NZ2FT-PBV parameter
"Output behaviour on fieldbus error".
Ex.
For the digital output module
Status of DP-Master (RJ71PB91V or
QJ71PB92V)
Data link in
CPU module RUN state
operation
CPU module: RUN STOP
CPU module PAUSE state
When the CPU module is reset
When in CPU module stop error
Disconnected (fieldbus error occurred)
Ex.
For the NZ2FTS-60DA4
Status of DP-Master (RJ71PB91V or
QJ71PB92V)
Data link in
CPU module RUN state
operation
CPU module: RUN STOP
CPU module PAUSE state
When the CPU module is reset
When in CPU module stop error
Disconnected (fieldbus error occurred)
NZ2FT-PBV parameter "Output behaviour on fieldbus error" setting
0: All outputs off
1: Enable substitute value (A substitute
(All outputs are
value is output.)
turned off.)
The I/O module
parameter
"Substitute value"
set to 1
Last
Last
Last
output
output
output
value is
value is
value is
off
on
off
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
ON
NZ2FT-PBV parameter "Output behaviour on fieldbus error" setting
0: All outputs off
1: Enable substitute value (A substitute
(All outputs are
value is output.)
turned off.)
D/A conversion value
0
A substitute value is output.
D/A conversion value
0
A substitute value is output.
0
A substitute value is output.
0
A substitute value is output.
The I/O module
parameter
"Substitute value"
set to 0
Last
Last
Last
output
output
output
value is
value is
value is
on
off
on
ON
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
ON
OFF
OFF
10
2: Hold last value
(The last output
value is held.)
Last
Last
output
output
value is
value is
off
on
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
2: Hold last value
(The last output
value is held.)
The last output value is
held.
The last output value is
held.
The last output value is
held.
The last output value is
held.
10 NZ2FT-PBV
233
10.4 Functions
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