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TITLE:
FANUC CIMPLICITY i CELL
OPERATOR’S MANUAL
05.05.19
B-75074EN/04-2
5.5.5 Reconnection Function in the Event of a Communication Error in
Read/Write Processes
Due to poor communication line quality, a communication error may occur
in a read/write process although the CNC power status monitor function,
described in Subsection 5.5.4, "CNC Power Status Monitor Function",
decides that the power is ON. It is possible to make settings so that a
reconnection is made in such a case, i.e., a communication is terminated and
another communication is started. It is possible to select a reconnection
method from three types, Disable/Select by Point/Enable.
Note that selecting a reconnection method is effective only if the personal
computer and the CNCs are in a same-network configuration such as that
shown in Fig. A in Subsection 5.5.4, "CNC Power Status Monitor Function".
The reconnection function is always enabled in a different network
configuration such as the one shown in Fig. B.
Reconnection method
Disable
Does not make a reconnection automatically. If a
communication error occurs, any subsequent reading from or
writing to the CNC will be canceled. If the power status of the
CNC turns OFF and then back ON, a reconnection will be made.
Select by Point
Used to specify whether to make a reconnection according to the
value of a point. The point used for this purpose is called the
communication reconnection instruction point. For an
explanation of communication reconnection instruction points, see
Subsection 5.5.8.8, "Communication reconnection instruction
point".
If a communication error occurs, CNC Connection sets the
communication reconnection instruction point to True. The user
application must monitor the communication reconnection
instruction point, and if it becomes True, perform appropriate
action such as notifying the operator of the communication error,
so that the operator can decide whether to make a reconnection.
To make a reconnection, set the communication reconnection
instruction point to False. If the communication reconnection
instruction point becomes False, CNC Connection makes a
reconnection. If a reconnection cannot be made, a reconnection
is attempted at every specified retry time until it is successful.
If this function causes a reconnection to be attempted, a log called