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5 I/O Refreshing
NX-series Digital I/O Unit User’s Manual (W521)
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2 I/O Refres
hing
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2-9 Output R
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• This method is used when you connect the NX Units that support output refreshing with specified
time stamp to the EtherCAT Coupler Unit, that is connected to the built-in EtherCAT port on the
NJ-series CPU Unit.
• You can specify the specified time and the output set value for each output bit. You can also set the
same specified time for multiple output bits.
• The EtherCAT Coupler Unit sets the output set values and the specified times to the NX Units and
acquires the output status at I/O refreshing. (Refer to (a) in the figure below.)
• The output status is used when you determine that the output was refreshed normally at the specified
time. Refer to
5-2-10 An Example of Turning ON Outputs at Specific Times After the Sensor Inputs
on page 5-29 for an example of determining that the output was refreshed.
• The NX Units turn ON the output status when the specified times are set.
• The NX Units refresh outputs and turn OFF the output status at the specified times. The values of
outputs that the NX Units refresh are the output set values at the specified times. (Refer to (b) in the
figure below.)
• The ON/OFF response time is needed from the specified time until setting the output status of exter-
nal terminals on the NX Units.
• If the next specified time is set before the current specified time is reached, the NX Units overwrite
the current specified time to the next specified time. The current specified time is ignored.
• If the value of the specified time is 0, the output is refreshed immediately. At this time, the Output
Units refresh outputs according to the output set values.
• When the specified time is set to the NX Units, if the specified time is a previous DC time, a Previous
Time Specified event (event code: 7001000 hex) occurs.
• To make the specified time as a future DC time when it is set to the NX Units, set the specified time to
satisfy both the following conditions.
a) A future DC time at least twice the task period from the previous value of the Time Stamp of Syn-
chronous Output (Refer to (c) in the figure below.)
b) A future DC time at least three times the task period from the input changed time read from the
Input Units that support input refreshing with input changed time (Refer to (d) in the figure below.)
• The Time Stamp of Synchronous Output is one of I/O data in the EtherCAT Coupler Unit, and con-
tains the DC time of synchronous outputs from the NX Unit. By default, it is not assigned to the I/O
entry mapping, so edit the settings and assign it to the I/O entry mapping. The added I/O data is
0x200A: 02 (Time Stamp of Synchronous Output).
Description of Operation
Содержание NX-IA3117
Страница 34: ...Sections in this Manual 32 NX series Digital I O Unit User s Manual W521...
Страница 52: ...1 Features and System Configuration 1 18 NX series Digital I O Unit User s Manual W521...
Страница 56: ...2 Specifications 2 4 NX series Digital I O Unit User s Manual W521...
Страница 152: ...5 I O Refreshing 5 36 NX series Digital I O Unit User s Manual W521...
Страница 204: ...8 Digital Mixed I O Units 8 8 NX series Digital I O Unit User s Manual W521...
Страница 224: ...9 Troubleshooting 9 20 NX series Digital I O Unit User s Manual W521...
Страница 230: ...10 Inspection and Maintenance 10 6 NX series Digital I O Unit User s Manual W521...
Страница 290: ...Appendices A 60 NX series Digital I O Unit User s Manual W521 Installation Height 100 71 Unit mm...
Страница 337: ...I 1 I NX series Digital I O Unit User s Manual W521 Index...
Страница 340: ...I 4 NX series Digital I O Unit User s Manual W521 Index...