ABB CL Series, Руководство по применению

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Wiring with the display system
128
1SVC 440 795 M1100
Number formats
The display system 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 = Signal 0 means a positive number.
Example:
00000000000000000000010000010010
bin
= 412
hex
=
1042
dec
Bit 32 = Signal 1 means a negative number
Example:
11111111111111111101110010101110
bin
=
FFFFDCAE
hex
= –9042
dec
Circuit diagram display
In the display system 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.
h
The marker byte (MB) and marker word (MW) number
formats are unsigned.