EZD operation
For more information visit:
www.EatonElectrical.com
MN05013005E
133
Number formats
EZD makes computations with a signed 31 bit value.
The value range is:
–2147483648 to +2147483647
With a 31 bit value, the 32nd bit is the sign bit.
Bit 32 = state “0” means a positive number.
Example:
00000000000000000000010000010010
bin
=
412
hex
= 1042
dec
Bit 32 = 1 means a negative number.
Example:
11111111111111111101110010101110
bin
= FFFFDCAE
hex
= –9042
dec
Circuit diagram display
In the EZD circuit diagram, contacts and coils of relays are
connected up from left to right - from the contact to the coil.
The circuit diagram is created on a hidden wiring grid
containing contact fields, coil fields and rungs. It is then wired
up with connections.
• Insert contacts in the four
contact fields
. The first contact
field on the left is automatically connected to the voltage.
• Insert the relay coil to be controlled together with its function
and designation in the
coil field
. The coil designation
consists of the coil name, coil number and function block
from the function designation. The coil function defines the
method of operation of the coil.
• Every line in the circuit diagram forms a
rung
. With the EZD
up to 256 rungs can be wired in a circuit diagram.
J
The marker byte (MB) and marker word (MW) number
formats are unsigned.
