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We have a DeltaV control system that uses the serial link (Modbus RTU) on an Ametek AN-6100C annunciator panel to send and receive alarms. The DeltaV is setup as the master and the annunciator is the slave. The problem I am having is that when the lamp test on the AN-6100C is pressed, it floods the DeltaV system with alarms and causes the process to shut down. I've had a look at the Ametek configuration software and can't see anything about it sending data when the lamp test is pressed. Does anyone have any ideas?
