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Chapter
8
Peripheral Functions
8.0
General
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
8.1
Communication Rate Setting
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
1
2
3
Baud Rate
Down
Down
Down
Down
Up
Up
Up
Down
Down
Up
Up
Down
Down
Up
Down
Up
Down
Up
Down
Up
Down
110
300
600
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.
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