17
2.4.1
Carakerja sistem PLC
dimana sistem
kerja PLC
dengan CCU
eli gambarkan dalam gambar
diagram
2.5 sebagai
berikut;
ccu
ROM WITH FIXED
OPERATING
SYSTEM
PROGRAM
I
CONTROL
H
ALU
HREGISTER I
UNIT
CONTROL SECTION
I
ANALISIS
I
I
I
I
LOGIC SCAN
PERIPHERAL
PROGRAM
INTERFACE
KEYBOARD
INPUT
(PROGRAM
OUTPUT
WITH
VOT
SCAN
USER
SCAN
OTHER
TAPE
BLOCK
WRITES FOR
BLOCK
CPU OR
PRINT
PROCESS
COMPUTERS
DISK
C
ONTROL)
INPUT
OUTPUT
MODULES
MODULES
Gambar 2.4.
Sistem
kerja
diagram
blok PLC.
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