Eaton easySafety, Руководство пользователя

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Circuit diagram elements
115
02/16 MN05013001Z EN
The options for setting output and marker relays are listed
with the description of each coil function.
The coil functions and parameters for the function blocks are
explained with the description of each function block.
Markers
The term “marker” generally refers to the standard marker
bit (M). easySafety devices also process safety marker bits
(MS), marker bytes (MB), marker words (MW) and marker
double words (MD). Standard markers are used in the
appropriate format for the intermediate storage of data. The
standard marker bits are used accordingly to store Boolean
states 0 or 1. Safety marker bits (MS) are used exclusively in
the safety circuit diagram. Marker bit (M), marker bytes
(MB), marker words (MW) and marker double words (MD)
are used in the safety circuit diagram.
Table 8: Standard markers
To use the standard markers MD, MW and MB as required
for the binary operands (contacts), the following rules must
be observed:
h
A detailed list of all contacts used in the standard and
safety circuit diagram is provided on page 643.
Markers easySafety
display Number Value
range Access type
r = read
w = write
Marker 32 bit
MD 01
-
96
32 Bit r, w
Marker 16 bit
MW 01
-
96
16 Bit r, w
Marker 8 bit
MB 01
-
96
8 Bit r, w
Safety markers 1 bit
MS 1
-
32
1 Bit r, w
Standard markers 1 bit
M 1
-
96
1 Bit r, w