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konimarti / opc

OPC DA client in Golang for monitoring and analyzing process data based on Windows COM.

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reconnect & read opc data is zero

ymmemo opened this issue · comments

commented

I test the connect lost & reconnect, than read opc data is zero.
there may be a bug here

func (conn *opcConnectionImpl) fix() {
	var err error
	if !conn.IsConnected() {
		for {
			tags := conn.Tags() // tags empty

If I have misinterpreted the expected behavior here, and there is a better way to do this please let me know.
thank you.

commented

Please check the quality return value of the opc item to check wheather the data read was successfull or not. When it is zero, it is not ok according to the opc da specification.