Allen-Bradley POINT I/O 1734-232ASC

1 Publication 1734-UM009A-EN-P - June 2002
Chapter 2
Configuring Your RS-232 ASCII Module
About Communications
The 1734-232ASC module has 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, the 1734-232ASC module
allows you to easily and conveniently connect and integrate
peripheral products with RS-232 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
1
.
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
A
4-132 bytes 4-132 bytes
Cyclic
A
4-132 bytes 4-132 bytes
Change of State
A
4-132 bytes 4-132 bytes
A Default values are 24 bytes.
ATTENTION
!
The 1734-232ASC module is not compatible with the
1734-APB PROFIBUS adapter.
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