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APPX
Appendix 4 Remote Buffer Memory
Details of remote buffer memory areas
Parameter area
■Transmission interval monitoring time
Set the safety input data transmission interval time of the safety remote I/O module for each module. This time is to be
monitored by the master station.
■I/O LED indication setting at error occurrence
Set whether the input and output points where an error is detected is indicated with an I/O LED.
The LED flashes with the following errors.
• Double input discrepancy detection error
• Input dark test error
• I/O data error
• Output read-back error
• Output dark test error
For the minor error from which the module can recover, the LED flashing stops when the error is cleared.
Since the LED flashes in 500ms cycle at error occurrence, pulse input of 500ms cycle cannot be distinguished
from an error occurrence. To distinguish the 500ms cycle pulse input, select "0: No indication of error point".
■Cyclic data update watch time setting
Set the time to monitor the update intervals of cyclic transmission data (watch time).
The available range is 0 to 20. When 0 is set, the monitoring is not performed.
When 1 to 20 are set, the watch time is as follows.
Watch time = Cyclic data update watch time setting 100 [ms]
When the watch time error of cyclic data update persists and cyclic transmission remains stopped, the standard
communications and safety communications are regarded as disconnected.
Address
(hexadecimal)
Name Setting range Default value
0000H Safety setting Transmission interval
monitoring time setting
4 to 1000ms 35ms
Address
(hexadecimal)
Name Setting range Default value
0001H I/O LED indication setting at error occurrence 0: No indication of error point
1: Indication of error point
0000H
Address
(hexadecimal)
Name Setting range Default value
0002H Cyclic data update watch time setting 0 to 20 (100ms) 0
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