1772-6.8.3, 8 - peripheral functions, Peripheral functions, 0 general 8.1 communication rate setting – Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual User Manual

Page 160

Chapter

8Ć1

Peripheral Functions

There are several functions that can be performed with a PLC-2/30 and the
industrial terminal. Some require the use of a peripheral divide connected
to channel C of the industrial terminal. The functions include:

Contact histogram
Cassette recorder dump and load
Data cartridge recorder dump and load
Ladder diagram dump
Total memory

The contact histogram and report generation functions can be monitored by
the industrial terminal without a peripheral device

The communication rate for channel C must be set to match the rate of the
peripheral device when a peripheral device other than the Data Cassette
Recorder (Cat. No. 1770-SA) or Digital Cartridge Recorder (Cat. No.
1770-SB) is used. The communication rate is the number of bits per second
(baud) sent to/from channel C. The baud for channel C can be set in one of
two ways:

Setting switches 1, 2 and 3 of the switch group assembly on the

industrial terminal’s main logic board (Table 8.A).

Table 8.A

Switch Group Settings

Switch

Baud Rate

Down

ă110

ă300

ă600

1200

2400

4800

9600

Pressing [RECORD] and a number from 2 to 8 on the industrial

terminal (Table 8.B). The settings of Table 8.B will override those of
Table 8.A, if used.

8.0
General

8.1
Communication Rate Setting