OPCN-1 Errors
Error Message	Contents	Solution
I/F Board Err	The I/F unit for OPCN-1 has an error.	Contact your local distributor.
Stat. No. out of range	The port number set by a switch is not within the setting range (1 to 127).	Specify the port number within the setting range.
Network Link Error	Cannot connect to the master station in the network.	Check the condition of the master station (PLC). Check the network connection.
Network I/O Access Err	MONITOUCH is about to access exceeding the set number of input/output words.	Check the memory for the network I/O in the screen data file.
Waiting for Reply	1. Less than “Max_int” time (communication monitoring time for salve station) set on the PLC for OPCN-1 communications 2. Timeout on the V-SFT editor (The timeout time can be set from [System Setting] → [Comm. Parameter] on the V-SFT editor.) This error is indicated when the above 1 and 2 are present.	When the “Max_int” time is too long (infinite, for example) on the PLC, it is not possible to know whether or not the response from the PLC is correctly made. This error message disappears when a response from the PLC is received within the “Max_int” time.
Word Writing to Sp. Relay (Mitsubishi A series)	Word writing to a special relay (M9000 and later) is attempted. * Only bit writing is possible for special relays when connecting with OPCN-1.	Do not attempt to perform word writing to special relays.