Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Instrukcja Użytkownika Pobierz pdf (Strona 44)

4–4 Configuring the Module

Publication 1771ĆUM127B-EN-P - December 2002

The 1771-N series modules use 15-bit signed magnitude BCD. The

maximum range value available then becomes +

7999.

Figure 4.1

4ĆDigit Binary Coded Decimal

1X2

0X2

1X2

0X2

1X2

0X2

1X2

0111100110011001

12955ĆI

Sign

Bit

0=+

1=Ć

Sign Bit Ć

Table 4.A

BCD Representation

Place Value

(8) 2

(4) 2

(2) 2

(1)

Decimal

Equivalent

0 0 0 0 0

0 0 0 1 1

0 0 1 0 2

0 0 1 1 3

0 1 0 0 4

0 1 0 1 5

0 1 1 0 6

0 1 1 1 7

1 0 0 0 8

1 0 0 1 9

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 187 188

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Rockwell-automation 1771-N SERIES High Resolution Analog Module User M Instrukcja Użytkownika Strona 44