Rockwell-automation 1794-APBDPV1 FLEX I/O PROFIBUS Adapter User Manual Instrukcja Użytkownika Pobierz pdf (Strona 38)

Publication 1794-UM064B-EN-P - May 2014

26 Communicate With Your Module

Not used – set to 0

Not used – set to zero. Write Words 8 and 9

Where: PU = Power up bit – included in Series B modules only.

W = Diagnostic bits for current output wire broken or load resistance high. (Not used on voltage outputs.)

U = Underrange bits for 4…20 mA inputs

S = Sign bit (in 2’s complement)

Chx SSC = Chx Safe State Config

C = Configure select bit

F = Full range bit

1794-IE4XOE2 Range Selection Bits

Channel No. Input

Channel 0

Input

Channel 1

Input

Channel 2

Input

Channel 3

Output

Channel 0

Output

Channel 1

F0 C0 F1 C1 F2 C2 F3 C3 F4 C4 F5 C5

Decimal Bits

(Octal Bits)

00 08

(10)

01 09

(11)

02 10

(12)

03 11

(13)

04 12

(14)

05 13

(15)

4…20 mA 101010101010

0…10V DC/0…20 mA010101010101

-10…10V DC 111111111111

Off 000000000000

Where: C = Configure select bit

F = Full range bit

Off = When configured to off, individual channels will return 0V.

1794-IE4XOE2 Word/Bit Descriptions

Word Decimal Bit Definition

Read Word 0 Bits 00…14

(00…16)

Channel 0 Analog Data – 12-bit left justified two’s complement number;

unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 0 analog date sign bit.

Read Word 1 Bits 00…14

(00…16)

Channel 1 Analog Data – 12-bit left justified two’s complement number;

unused lower bits are zero; 4...20 mA uses all 16 bits.

Bit 15 (17) Channel 1 analog date sign bit.

Read Word 2 Bits 00…14

(00…16)

Channel 2 Analog Data – 12-bit left justified two’s complement number;

unused lower bits are zero; 4…20 mA uses all 16 bits.

Bit 15 (17) Channel 2 analog data sign bit.

Read Word 3 Bits 00…14

(00…16)

Channel 3 Analog Data – 12-bit left justified two’s complement number;

unused lower bits are zero; 4…20 mA used all 16 bits.

Bit 15 (17) Channel 3 analog data sign bit.

1794-IE4XOE2 Memory Map

Decimal Bit15 14 13 12 11 10 09080706050403020100Size

Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00 Read/Write Words

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 152 153

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