5. Programming on the device
5.2 Circuit diagram display
name, coil number, and, in the case of function blocks, the function identifier. The
coil function defines the method of operation of the coil.
The cursor buttons   can be used to change the contact fields. The number of the
circuit connection and the contact are displayed in the lower status line.
There are 256 rungs available in the circuit diagram, for wiring contacts and coils.
For greater legibility the circuit diagram display of the easyE4 device shows two con-
tacts or one contact plus coil in a row on each rung. A total of 16 characters per cir-
cuit connection and five circuit connections plus the status line can be displayed
simultaneously.

Program display on the display
l
Connections are used to produce the electrical contact between relay contacts
and the coils. They can be created across several rungs. Each point of inter-
section is a connection.
l
The number of free bytes is displayed so that you can recognize how much
memory is available for the circuit diagram and function blocks.
The circuit diagram display has two functions:
l
It is used to edit the circuit diagram in STOP mode.
l
It is used in RUN mode to check the circuit diagram using
the power flow display.
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easyE402/24 MN050009ENEaton.com
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