4. PLC-ийн ангилал
(1) Compact
Monolithic construction
Monoprocessor
Fieldbus connection
Fixed casing
No process computer capabilities (no MMC)
Fixed number of I/O (most of them binary)
(2)
Modular PLC
Modular construction (backplane)
One- or multiprocessor system
Fieldbus and LAN connection
DIN-rail
Large variety of input/output boards
Connection to serial bus
34
5. Compact эсвэл modular ?
€
field bus
extension
compact PLC
(fixed number of I/Os)
modular PLC (variable number of I/Os
Limit of local I/O
# I/O modules
35