Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual User Manual

Page 123

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Publication 1760-UM002B-EN-P - March 2005

Wiring with Pico GFX-70 4-13

The following rules apply if you want to use selective binary operands
(contacts) from the markers MD, MW, MB:

Table 4.5 Data Access Options

Markers

Analog operand

Pico GFX-70
display

Number

Value
range

Access type

r = Read
w = Write

Marker 32-bit

1MD

01

20

32-bit

r, w

Marker 16-bit

1MW

01

40

16-bit

r, w

Marker 8-bit

1MB

01

80

8-bit

r, w

Marker 1-bit

1M

0

96

1-bit

r, w

Analog inputs basic
unit

1IA X

X=01

04

10-bit

r

Analog output

1QA X

X=01

10-bit

r

Table 4.6 Composition of the markers

Applies to
MD, MW,
MB, M

Left = most
significant bit,
byte, word

Right = least
significant bit,
byte, word

32-bit

MD1

16-bit

MW2

MW1

8-bit

MB4

MB3

MB2

MB1

1-bit

M32 to M25

M24 to M17

M16 to M9

M8 to M1

32-bit

MD2

16-bit

MW4

MW3

8-bit

MB8

MB7

MB6

MB5

1-bit

M64 to M57

M56 to M49

M48 to M41

M40 to M33

32-bit

MD3

16-bit

MW6

MW5

8-bit

MB12

MB11

MB10

MB9

1-bit

M96 to M89

M88 to M81

M80 to M73

M72 to M65

32-bit

MD4

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