To display the graph, delay the Control
Address' display bit (bit 0) by a time longer than the
communication cycle time or 50ms (whichever is larger), after
storing the data count and data values.
The communication cycle time is stored in the display unit's
special relay internal device (LS2037).
Control address data is set to zero after
the graph displays. to display the graph again, restore the data to
the control address with a time longer than the communication cycle
time or 50ms (whichever is longer).