Rockwell-automation 1794-ASB/E Remote I/O Adapter Module User Manual Instrukcja Użytkownika Pobierz pdf (Strona 47)

3–13Communicating with FLEX I/O Modules

Publication 1794ĆUM009D-EN-P - April 2004

00071017 00071017

I/O Group

Input Image Table Output Image Table

M0 M1 M2 M3 M4 M5 M6 M7

IL = Input Low Byte

IH = Input High Byte

OL = Output Low Byte

OH = Output High Byte

MCB = Module Control Byte

MSB = Module Status Byte

ASB/E

CĆM0 CĆM1 CĆM2 CĆM3 CĆM4 CĆM5 CĆM6 CĆM7

ASB/E

Primary

Comp.

IH IL

OH OL OH OL

OB16

IB16

OB16

IB16

OB16

Empty

M0ĆIL

M1ĆIL

M0ĆIH

M1ĆIH

CĆM0ĆOL

CĆM1ĆOL

CĆM2ĆOL

CĆM0ĆOH

CĆM1ĆOH

CĆM2ĆOH

M3ĆMCB

MCB

MSB

OE4

Empty

IE8 IB16

OB16

OH OL

IH IL

M4ĆMCBM4ĆMSB

CĆM5ĆOHM5ĆIH

M6ĆOLM6ĆOH

M7ĆILM7ĆIH

CĆM6ĆILCĆM6ĆIH

CĆM7ĆOLCĆM7ĆOH

OB16

IB16 OB16

IB16

Complementary 16Ćpoint Addressing Example

1 I/O Group

- Up to 16 modules = 1 logical rack

Legal Module Placement in 16Ćpoint Complementary

Any module or empty slot in any I/O position of the

primary chassis; input modules complemented by

output modules, or empty slots; output modules

complemented by input modules or empty slots; block

transfer modules complemented by block transfer

modules or empty slots; or empty slots

complemented by input, output, or empty slots.

MCB

MSB

M5ĆIL

CĆM5ĆOL

MCB

MSB

IH IL

OH OL

M3ĆMSB

CĆM4ĆMSB

CĆM4ĆMCB

IE8

Note: Shaded areas represent unavailable data

Note: When programming block transfer instructions, address analog modules in the primary rack as module

1," and analog modules in the complementary rack as module 0."

Complementary Mode - 8Ćpoint

Complementary mode maximizes chassis I/O image table usage

when input modules are installed in one chassis, and output modules

are installed in a complementary chassis. This allows four modules

to occupy a single I/O group.

In complementary mode, with 8-point density, 2 digital input

modules in the primary chassis, and 2 digital output modules in the

complementary chassis, or vice versa, form an I/O group. In

addition, analog modules must be complemented by an empty base.

If higher density modules are used, only the lowest 8 bits will be

available.

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 71 72

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