Distributed I/O
An impressive line up of A&C Product Design, Technology, Software and Devices
Industrial Measure and Control, there are various methods
- PLCs
- PACs
- FPGAs
- PID Controllers
For Industrial Control, Horticultural Cool Stores, Building Automation, Laboratory Growth Chambers, Machine Builders, Green House, Agricultural, Horticultural, Farm, Aqua Systems Portable Production Plants and more
Plus Soft PLCs
PLCs & PLCs
PACs, PLCs, PID & Controllers
The topic of PACs and PLCs + other controllers, covers a large range of product type as seen below.
PACs represent the latest Automation and Control technology, that has many advantages over the traditional PLCs.
Both in Hardware and Software, PACs expand beyond PLCs ability.
There are two levels – Lossless PAC & OS PACs.
However for many projects a PLC is lower cost and a good technical fit for the job.
Hence MasTec offers all levels of PACs and PLCs to choose from.
For dedicated control, like ovens, furnaces etc, the lowest cost controller is the PID Controller in many form factors.
Embedded PACs, PLCs and controllers are also available is programmed by Basic, C, a Proprietary Language running in an OS or OS less environment. This is often a very good choice for Machine building where greater flexibility is required.
The Last technology that is often used is Distributed I/O. This can mean a PLC or PAC driving a set of Distributed IO remote blocks or can be a PC acting as a Soft PAC driving an ethernet or RS-485 network of remote IO blocks. Often a very good solution for simple control and monitoring
There is also a new form of PLC that is extremely low cost that comes in various levels of performance. At the simple level they are a very powerful relay controller with both Analog and Digital Inputs.
These low cost PLCs can be expanded to carry dozens of IO points and can easily interface with Analog systems for control.
Any machine builder that just wants Digital Control could look at these devices as a very quick and low cost solution.
Raspberry Pi Soft PLC
Baby Modbus PLCs
Keyence Mini and Small PLC
Hardened Computer based PAC Systems
OS Win CE or Linux
Intel based hardened computers with I/O – Win CE or Linux
Intel ATOM based hardened computers with I/O – Win CE or Linux
Arm 9 based hardened computers with I/O
Linux
Distributed I/O Systems
OS Win7, 8, 8.1, WinCE or Linux
Distributed I/O :- Using a PC as the PAC controller
Distributed I/O :- Network Brain – hardened ethernet
Distributed I/O :- PC Based – hardened ethernet
Distributed I/O :- PC Based – hardened 4 wire RS-485
Distributed I/O :- PC Based – Soft-Logic with Computer I/O
Distributed I/O :- Soft Logic –
External ADAM RS-232/485 I/O modules
Modbus RTU, Serial and TCP
Distributed I/O :- DeviceNet and CANbus
Distributed I/O :- PC based Ethernet
Modbus, USB, RS-232, RS-485
Analog and Digital I/O + Relays and SSRs
Distributed I/O :- USB and Ethernet I/O modules
PLCs
No OS
PLCs – Siemens & Allen Bradley Equivalent PLCs
True Modbus PLCs
PLCs – Tiny DIN – Function Block Programming
Full Function PLCs
PLCs – Tiny DIN – Function Block Programming
Programmable Relays + Analog IO
PLCs IEC-61131-3
Linux OS
Program in 5 ways. Text Languages, Flow charts, function blocks, Standardised Ladder etc
PLCs – Tiny OEM Embedding- FBD Programming
PLCs – Small PLCs, Ethernet, Modbus FBD Programming
PLCs – Advanced PLC, Modbus, RS-485, 4-20mA in and out, SMS – Ethernet – HMI – FBD Programming – Expansion
PLC using Embedded Micro Conrollers
OS Linux or COS Realtime
Raspberry Pi based Soft Logic PLC, very slick and low cost. Rugged IO blocks suitable for AC Power.
Plug a standard Pi into the OPTO 22 back plane and read/control industrial Isolated IO modules
PLCs – Board and box level – ARM 9 – Linux based – C Programming
PLCs – Micro Controller – COS multitasker based – C Programming

