PLCs - Programmable Logic Controllers

A PLC (programmable logic controller) is an industrial digital computer designed for the control of manufacturing processes or robotic devices where reliability control, simple programming and fault diagnosis is necessary. They were originally built to replace electromechanical relay systems in industrial automation.

A CPU (central processing unit) forms part of the PLC system. PLC CPUs are microprocessor-based and act as the electronic circuitry within an industrial computer. They carry out instructions from the computer program, performing basic mathematical, logical, control, input and output operations.

What are PLCs used for?

PLC controllers are important for the correct functioning of machinery in manufacturing and industry. They are used in the automation of electromechanical processes, including control of machinery on assembly lines, amusement rides, or lighting fixtures. PLCs are ideal for applications that require constant monitoring of input devices whilst allowing decisions to be made via a custom program. This ultimately enables it to control an output.

Types of PLCs

Programmable logic controllers are divided into small, medium and large modular categories. Small control systems are robust, compact and mountable on top of or beside the equipment to be controlled. Medium controllers mainly use rack mounting or backplane systems, allowing for simple upgrading via additional function cards. Large systems are necessary for applications where complex control functions are executed, usually in large plants, in machinery requiring constant monitoring, or control of other PLC hardware.

What setups are suitable for programmable logic controllers?

PLCs feature a modular design, making them suitable for use in a wide range of applications. Due to the modular aspect, PLCs can be plugged into numerous setups making them highly versatile.


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Description Price For Use With Manufacturer Series Number of Inputs Number of Digital Inputs Output Type Input Type Number of Analogue Inputs Voltage Category Number of Digital Outputs Interface Kit Included Number of Outputs Network Type Display Included
RS庫存編號 862-4487
製造零件編號6ES7215-1AG40-0XB0
BrandSiemens
TWD21,125.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - Transistor Output), 10 (Digital Output Ethernet -
RS庫存編號 862-4471
製造零件編號6ES7214-1AG40-0XB0
BrandSiemens
TWD18,140.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Transistor Analogue, Digital - 24 V dc - - - Transistor Output), 10 (Digital Output Ethernet -
RS庫存編號 872-6321
製造零件編號6AV2132-3GB00-0AA1
BrandSiemens
TWD34,733.00
單位
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - - - 4 Ethernet Yes
RS庫存編號 862-4483
製造零件編號6ES7215-1BG40-0XB0
BrandSiemens
TWD21,699.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - Relay Output), 10 (Digital Output Ethernet -
RS庫存編號 872-6328
製造零件編號6AV2132-0KA00-0AA1
BrandSiemens
TWD19,821.00
單位
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - - - 4 Ethernet Yes
RS庫存編號 872-6319
製造零件編號6AV2132-0HA00-0AA1
BrandSiemens
TWD14,866.00
單位
LOGO! 8, LOGO! 8.2 LOGO! - - Relay Digital - - - - - 4 Ethernet Yes
RS庫存編號 825-1697
製造零件編號6ED1055-1MD00-0BA2
BrandSiemens
TWD4,316.00
單位
LOGO! 8, LOGO! 8.2 LOGO! 2 - - Analogue Pt100/1000 - - - - - - - -
RS庫存編號 787-7992
製造零件編號6ES7314-6BH04-0AB0
BrandSiemens
TWD71,177.00
單位
SIMATIC S7-300 Series S7-300 4 (Analogue), 24 (Digital) - Analogue, Digital Analogue, Digital - 24 V dc - - - 2 (Analogue), 16 (Digital) USB -
RS庫存編號 862-4477
製造零件編號6ES7214-1BG40-0XB0
BrandSiemens
TWD14,390.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 14 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - Relay Output), 10 (Digital Output Ethernet -
RS庫存編號 862-4468
製造零件編號6ES7211-1HE40-0XB0
BrandSiemens
TWD7,080.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 6 (Digital Input - Digital, Relay Analogue, Digital - 24 V dc - - - Relay Output), 4 (Digital Output Ethernet -
RS庫存編號 746-6527
製造零件編號6ES7314-6EH04-0AB0
BrandSiemens
TWD87,440.00
單位
- S7-300 4 Analogue), 28 (24 Digital - Analogue, Digital Analogue, Digital - 24 V dc - - - 2 Analogue), 18 (16 Digital Ethernet, Profinet -
RS庫存編號 825-1688
製造零件編號6ED1055-1HB00-0BA2
BrandSiemens
TWD2,912.00
單位
LOGO! 8, LOGO! 8.2 LOGO! 4 - Relay Digital - - - - - 4 - -
RS庫存編號 862-4455
製造零件編號6ES7211-1BE40-0XB0
BrandSiemens
TWD7,080.00
單位
SIMATIC S7-1200 Series S7-1200 2 switch as Analogue Input), 6 (Digital Input - Digital, Relay Analogue, Digital - 85 → 264 V ac - - - Relay Output), 4 (Digital Output Ethernet -
RS庫存編號 209-7101
製造零件編號6ED1052-1CC08-0BA1
BrandSiemens
TWD4,515.00
單位
LOGO! 8.3 LOGO! 12 8 Transistor Analogue, Digital 4 - - - - 4 Ethernet Yes
RS庫存編號 200-9325
製造零件編號6ES7517-3FP00-0AB0
BrandSiemens
TWD233,263.00
單位
S7-1500F SIMATIC 20 - - - - - - - - 20 Profibus, Profinet -
RS庫存編號 165-3229
製造零件編號6ED1052-2HB08-0BA0
BrandSiemens
TWD4,189.00
單位
LOGO! 8.2 - 8 - Relay Digital - - - - - 4 Ethernet -
RS庫存編號 201-8381
製造零件編號6AV6651-7KA02-3AA4
BrandSiemens
TWD25,095.00
單位
SIMATIC S7-1200 Series S7-1200 8 6 - Analogue, Digital 2 - - - - 4 Profinet -
RS庫存編號 209-7104
製造零件編號6ED1052-1MD08-0BA1
BrandSiemens
TWD5,181.00
單位
LOGO! 8.3 LOGO! 12 8 Relay Analogue, Digital 4 - - - - 4 Ethernet Yes
RS庫存編號 165-3283
製造零件編號6ED1057-3BA03-0AA8
BrandSiemens
TWD7,690.00
單位
LOGO! 8.2 LOGO! - - - - - - - - - - - -
RS庫存編號 203-2824
製造零件編號6ES7512-1SK01-0AB0
BrandSiemens
TWD45,950.00
單位
ET 200SP SIMATIC DP 20 - - - - - - - - 20 Ethernet -