Rockwell-automation 1734-485ASC POINT I/O ASCII User Manual Manuel d'utilisateur télécharger pdf (Page 27)

1 Publication 1734-UM009B-EN-P - July 2003

Chapter

Configuring Your ASCII Module

About Communications

The ASCII modules have DeviceNet-to-serial link communication that

provides a flexible DeviceNet interface to a wide variety of ASCII

devices. Used with the POINT I/O system, these modules allow you to

easily and conveniently connect and integrate peripheral products

with RS-232, RS-485, or RS-422 serial ports into a DeviceNet system.

Data can be exchanged with the master through a polled, cyclic, or

change-of-state connection. Bit-Strobe Command Response Messaging

and the Unconnected Message Manager (UCMM) are not supported

The module produces and consumes data as follows:

1 If you are not familiar with these terms, see the DeviceNet Specification for definitions (online: www.odva.org).

Table 2.1 Produce/Consume Data

I/O Connection Type Consumes Produces

Polled

4-132 bytes 4-132 bytes

Cyclic

4-132 bytes 4-132 bytes

Change of State

4-132 bytes 4-132 bytes

A Default values are 24 bytes.

ATTENTION

The ASCII modules are not compatible with the

1734-APB PROFIBUS adapter.

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 75 76

Pas de commentaire

Rockwell-automation 1734-485ASC POINT I/O ASCII User Manual Manuel d'utilisateur Page 27