Rockwell-automation 1738-ADNX ArmorPoint I/O DeviceNet Adapters Manual de usuario descargar pdf (Pagina 93)

Publication 1738-UM001A-EN-P - February 2005

Quick Start For the 1738-ADNX B-19

Inputs and Outputs

1. Select the Input tab. A single word is 16 bits. Notice that the

mapping is as expected.

• The first two bytes (1 byte = 8 bits) are reserved as read only.

• The first word is completely used, so the 1738-IB4M12 can map

to the beginning of the next word (byte 2, bit 0).

• There is a space between the 1738-IB4M12 and the

1738-OB4EM12 because the next word does not start until byte

This field describes how th

data is transferred betwee

the I/O modules and the

adapter on the PointBus

Subnet.

The first 2 bytes are

reserved for status.

Use the scroll bar as

needed to see all of the

data.

The current memory

buffer selected is

COS/Cyclic. There are

also buffers for Polled

and Strobed. This is

how the data will be

transferred to the

scanner (1756-DNB in

this example).

Note the mapping in the

1738-ADNX Scanner is

shown in byte

increments. The

1756-DNB displays in

double words (4 bytes).

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 133 134

Sin comentarios

Rockwell-automation 1738-ADNX ArmorPoint I/O DeviceNet Adapters Manual de usuario Pagina 93