Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual - Manual (Page 10)

Introduction
Chapter 1
1Ć6
Table 1.C lists the specifications for the 1775–KA module.
Table 1.C
Module Specifications
Function
Interface the PLC-3 Processor
with the Allen-Bradley Data
Highway and/or with an RS-232-C
device
Communication Rate
To Data Highway - 57.6 kilobaud
recommended
To modem-programmable from 110
baud to 19.2 kilobaud
Backplane Power Requirement
2.5A max. @ +5V DC
Ambient Temperature Rating
0 0 o 60 0 C (operational)
-40 0 to 85 0 C (storage)
Location
Single slot in PLC-3 main chassis
or expander chassis
Cabling
To Data Highway-Data Highway
dropline cable (Cat.no.1770-CD or
equivalent
Humidity Rating
5% to 95% (without condensation)
Communication Ports
Data Highway
RS-232-C Modem
To modem-Modem interface cable
(cat. no. 1775-CKA or equivalent)
As already mentioned, the 1775–KA module serves two main purposes:
Interfacing the PLC–3 processor with the Allen–Bradley Data Highway
Interfacing the PLC–3 processor with an intelligent RS–232–C device
You can use the module for both of these purposes simultaneously.
In Data Highway applications, the module serves as an interface between
the PLC–3 programmable controller and the Allen–Bradley Data
Highway. The Data Highway is an industrial communication network
that links together as many as 64 distinct stations. Each station can consist
of a programmable controller (such as the PLC–3), a computer, or an
intelligent RS–232–C device. The central trunkline of the Data Highway
may be up to 10,000 feet long, and each station may be as far as 100 feet
from the trunkline. Figure 1.2 gives an example of a Data Highway
configuration.
Specifications
Applications