WESTERM D20C GE

Differences and characteristics between PLC and DCS:

The birth of a pair of industrial control partners, PLC and DCS, is very different: Modicon developed a PLC system in 1968, which was mainly used to replace relays in automotive production lines to achieve control purposes. Only four years later, Honeywell developed a DCS system. Of course, unlike PLC, which immediately threw itself into production lines with harsh environments, DCS’s treatment is significantly better than his “brother”, but it is also significantly more delicate than PLC, which enjoys air conditioning in the control room. In this case, although both are industrial control devices, their different birth backgrounds make PLC and DCS play their respective roles in production control in the manufacturing industry, with their respective characteristics:

First of all, this innate purpose led to the PLC being just a control “device”. As a substitute for relays, in its early days, PLC was only used to store instructions for performing logical operations, sequential control, timing, counting, and arithmetic operations; Digital input and output operations are used to control various types of machinery or production processes. This characteristic leads to its general use in smaller self-control locations, and its extensibility is not strong.

ASEA BROWN BOVERI 3HAA0001-JC NSPP 3HAA0001JC

ASEA BROWN BOVERI 57298821 NSFP 57298821

ASEA BROWN BOVERI 5716075-P USPP 5716075P

ASEA BROWN BOVERI DSDX-452 USPP DSDX452

ASEA BROWN BOVERI 1SDA054335R1 USPP 1SDA054335R1

ASEA BROWN BOVERI 3HAB-2206-1/1 USPP 3HAB220611

ASEA BROWN BOVERI 57411546 USPP 57411546

ASEA BROWN BOVERI YT212-002-A USPP YT212002A

ASEA BROWN BOVERI S6H600BW NSPP S6H600BW

ASEA BROWN BOVERI DSCQ315 NSPP DSCQ315

ASEA BROWN BOVERI EH550C-Q1 NSPP EH550CQ1

ASEA BROWN BOVERI E-32235 USPP E32235

ASEA BROWN BOVERI DCS502-0140-51-​1100010 USPP DCS502014

ASEA BROWN BOVERI QFVF502 USPP QFVF502

ASEA BROWN BOVERI QMVU501 USPP QMVU501