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I have been reading the different discussions and I realize that a slave device cannot communicate an alarm condition to the master. The master has to poll the slave.
What I want to do is to program an alarm condition to my slave device that when the condition is met the slave would set a bit in the alarm register but would also set a DIO to high without the interaction of the master. The slave would do this all on its own. I want to know if this is a legal operation in Modbus protocol.
Thanks.
What I want to do is to program an alarm condition to my slave device that when the condition is met the slave would set a bit in the alarm register but would also set a DIO to high without the interaction of the master. The slave would do this all on its own. I want to know if this is a legal operation in Modbus protocol.
Thanks.