I-7242D user manual
I-7242D DeviceNet/Modbus RTU Gateway User’s Manual, July 2006, Version 1.1 18/124
2.4.3 IO LED
This LED provides the information of inputs or outputs access status.
When Master get/set input/output data of Modbus devices via the I-7242D, the
LED would be flashed. Table 2-8 shows the conditions for IO status. Therefore,
when the device IO-function is working, the IO-LED should be flashed.
Table 2-8 IO led conditions
Condition Status
Description
Off No
data
No data is being transmitted or
received
Flashing red
Communicating
Data is being transmitted or received