4 Wiring with 800
4.4 Circuit diagram elements
Control Relay easy800
11/11 MN04902001Z-EN
www.eaton.com
109
Table 15: Markers and analog operands
Avoid any accidental double assignment of markers. In this way, you can
assign the available 96 or 128 marker bit contacts and also change the state
of these marker bits via the first 12 marker bytes (MB), 6 marker words or 3
marker double words. This will generate undefined states. When write
accesses are made successively within an MD, such as to MD1, MW2, MB4
or M32, the last write operation is retained.
Markers and analog operand
Display
easy800
standard
easy800-
SWD
Value
range
Access
type
1)
Marker 32 bit
MD
01
-
96
01-128
32 Bit
r, w
Marker 16 bit
MW
01
-
96
01-128
16 bits
r, w
Marker 8 bit
MB
01
-
96
01-128
8 bit
r, w
Marker 1 bit
M
1
-
96
01-128
1-bit
r, w
Analog inputs easy800 standard
IA X
X=01
-
04
None
10 Bit
r
Analog output
QA X
X=01
None
10 Bit
r, w
Analog inputs, expansion unit with 2
analog inputs
MW X
X=93
,
94
None
10 Bit
r
Analog inputs, expansion unit with 2
analog inputs
MW X
X=89
…
94
None
10 Bit
r
Analog output, expansion unit with 1
analog output
MW X
X=95
None
10 Bit
r, w
Analog output, expansion unit with 2
analog outputs
MW X
X=95
,
96
None
10 Bit
r, w
1) r = Read; w = Write
￫
Tip: Observing the following wiring rules will prevent the double
assignment of marker bits.
•
For easy800 standard with the marker bits M01-M96 use
•
Marker bytes, starting at MB13
•
Marker words, starting at MW07
•
Marker double words, starting at MD04
•
For easy800-SWD with the marker bits M01-M128 use
•
Marker bytes, starting at MB13
•
Marker words, starting at MW07
•
Marker double words starting at MD04
