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.
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