Description
3704E TRICONEX controller
3704E TRICONEX controller
Module Clips Drive controller servo motor
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What IO combinations can a mini PLC combine with to achieve automated control?
At present, there are two main design modes for controllers like PLC, one is integrated design and the other is modular design. From the name, we can feel that there are two different PLCs, one that cannot be disassembled and the other that can be disassembled. Due to the fact that the main control module and IO module of the modular PLC can be spliced as needed, its volume and weight are usually very small, and we cannot call it a mini PLC too much. So, what IO combinations can such a small gadget combine with to achieve automation control? Let”s take a brief inventory:3704E TRICONEX controller
1. Firstly, there is the digital quantity acquisition IO module, which is used to collect digital quantity information. Typical examples include counter IO, PNP type digital quantity acquisition IO, NPN type digital quantity acquisition IO, etc.
2. Then there is the digital output IO module, which is used to send digital instructions. The most typical example is PWM output IO, which can output pulse signals to control servo motors or stepper motors for operation.
3. After talking about digital IO, let”s talk about analog IO. Analog signal acquisition type IO includes voltage signal acquisition, current signal acquisition, and temperature signal acquisition. The IO for collecting temperature signals includes PT100, PT1000, and various thermocouple temperature acquisition modules.
4. Finally, there are analog output IO, as well as output current signals and voltage signals.
In addition to the above IO modules, our modular PLC also supports extended communication interfaces, further enhancing the equipment”s scalability.
Module Input/Output (I/O) Knowledge3704E TRICONEX controller
Module Input/Output (I/O) Knowledge
I think it”s necessary to talk about the sorting of the input and output ports of the module. Generally, we can divide it into IO functional division and IO specifications.
The purpose of the former is mainly to convert all functions into actual division into MCU IO ports, while the purpose of the latter is to determine the specifications of all IO ports. Of course, you can completely skip these tasks, and it”s also possible. Depending on the company”s requirements, I think individuals still consider them as a work habit.
The following examples are all created for my blog post. If there are any duplicate names, please do not contact me.
Looking at the above figure, first determine all input and output functions and power input, as well as communication.
Then separate the power distribution with different lines, and start organizing each power supply line and processing process. The final purpose of the entire diagram is to clearly allocate the input and output sequence.
The IO specification is to provide a detailed description of all interfaces, crystal oscillators, and other information to the MCU.
1. Enter the number of low effective interfaces and how much pull-up resistance (switch wet current) is required (how much current does the microcontroller need to absorb, which may be injected into the microcontroller after pull-up).
2. Enter the number of highly effective interfaces, how many pull-down resistors are required (switch wet current), (how much current does the microcontroller need to absorb, and it is possible to inject the microcontroller after the switch is effective)
3. Number of analog input interfaces, evaluate whether the analog ports of the microcontroller are sufficient, and confirm the required analog conversion accuracy. Evaluate whether the A/D conversion reference voltage needs to be replaced (to meet accuracy requirements). Consider how many power supplies need to be tested and how many analog input ports are configured.
4. Evaluate the requirements for crystal oscillator accuracy and whether a phase-locked loop is required.
The above requirements are mainly aimed at module design and need to be confirmed during the early development of the module. All requirements can be organized using an Excel table and displayed in the diagram.
Distributed dual Ethernet IO module
The distributed dual Ethernet IO module adopts an industrial grade design, which meets the demanding industrial application scenarios. It is equipped with a dedicated high-performance Ethernet chip, which can quickly achieve cascade networking between IO modules without the need for repeated wiring, saving on-site wiring costs.
The distributed dual Ethernet IO module comes with switch input, switch output, relay output, analog input, analog input, thermal resistance input, etc. It supports high-speed pulse input counting and high-speed pulse output, and is designed specifically for industrial field data collection, measurement, and control. The distributed dual Ethernet IO module supports Modbus TCP protocol and Modbus RTU protocol for uplink, which can quickly connect to existing DCS, SCADA, PLC, HMI and other systems. The distributed dual Ethernet IO module supports one RS485 interface and supports Modbus RTU Master function. It can expand the IO module, read and write intelligent instrument data, or connect to HMI, DCS, PLC and other devices as a Modbus Slave.
Definition of IO Link Protocol and Its Interface
IO Link is a peer-to-peer, serial digital communication protocol designed for periodic data exchange between sensors/actuators and controllers (PLCs). The IO Link protocol was first proposed by Siemens and has now become an international standard IEC 61131-9. With the advancement of Industry 4.0, the use of IO Link is becoming increasingly widespread. Today”s article will introduce the definition of the IO Link protocol and its interfaces.
Factory automation can be divided into execution layer, on-site layer, on-site control layer, workshop control layer, and management layer according to functional division. As shown in the following figure:
The execution layer includes various execution mechanisms (valves, pumps, motors, etc.) and sensors, which are the muscles and peripheral nerves of factory automation. They receive commands from the upper layer and complete specified actions.
The on-3704E TRICONEX controller site layer includes various distributed IO3704E TRICONEX controller systems, which are the central nervous system of factory automation. It conveys control instructions from the upper layer to the execution layer; And feedback the signals from the execution layer to the control layer, serving as the information center;
The on-site control layer includes various PLC systems, which are the brains of factory automation. It issues corresponding instructions and commands the execution layer to complete corresponding actions based on internal program requirements and signal feedback from the execution layer;
The workshop control layer (MES) and management layer communicate with various PLC systems at the management level to complete management tasks at the workshop and factory levels.
The IO Link protocol to be introduced in this article is a protocol that transfers data between the execution layer and the field layer. An IO Link system consists of the following components:
1) IO Link Master;
2) IO Link Device;
3) Non shielded 3-5 core standard cable;
4) Tools for configuring IO Link parameters;
The IO Link Master transfers data between the IO Link device and the PLC. It is usually a distributed IO module with IO Link connection channels on the module. The IO Link Device is connected to the channel of the IO Link Master through a cable, and the IO Link Master exchanges data with the PLC through a bus. As shown in the following figure:
Every IO Link device needs to be connected to a channel of the IO Link supervisor, so IO Link is a peer-to-peer communication protocol, not a bus protocol.
IO Link devices are divided into two types: sensors and actuators: sensors are usually the four pin interface of M12, and actuators are usually the five pin interface of M12.
According to IEC 60974-5-2, the definition of IO Link Device pins follows the following regulations:
1) Pin 1 (PIN1): 24V power supply positive pole;
2) Pin 3 (PIN3): 0V
3) Pin 4 (PIN4): IO Link communication or standard IO output;
The pin definition of the IO Link device is shown in the following figure:
Which types of equipment should PLC module manufacturers develop first?
We know that PLC, also known as programmable logic controller, collects variable data through various IOs to achieve the purpose of automated control. Therefore, developing PLC is largely about developing IO. However, with so many types of IO, which PLC module manufacturers should develop first? Let me share my opinion:
1. Digital input IO, including PNP and NPN digital input IO, counter input IO, etc.
2. Digital output IO, including PNP and NPN digital output IO, PWM pulse output IO, relay output IO, and so on.
3. Analog input IO, including current acquisition input IO, voltage acquisition input IO, temperature acquisition input IO, and so on. The current input IO can collect currents ranging from 0 to 20 milliamperes, while the voltage input IO can collect voltages ranging from negative 10V to positive 10V. Temperature acquisition IO includes thermocouples and thermal resistors.
4. The style of analog output IO is similar to that of analog input IO, but does not include temperature analog, mainly voltage and current type.
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems
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BENTLY — 3500 system/proximitor, front and rear card, sensor, probe, cable 3500/20 3500/61 3500/05-01-02-00-001 3500/40M 176449-01 3500/22M 138607-01
Emerson — modbus card, power panel, controller, power supply, base, power module, switch 1C31,5X00, CE400, A6500-UM, SE3008,1B300,1X00,
EPRO — PR6423 PR6424 PR6425 PR6426 PR9376 PR9268 Data acquisition module, probe, speed sensor, vibration sensor
FOXBORO — FCP270 FCP280 FCM10EF FBM207 P0914TD CP40B FBI10E FBM02 FBM202 FBM207B P0400HE Thermal resistance input/output module, power module, communication module, cable, controller, switch
GE —- IS200/215/220/230/420 DS200/215 IC693/695/697/698 VMICPCI VMIVME 369-HI-R-M-0-0-E 469 module, air switch, I/O module, display, CPU module, power module, converter, CPU board, Ethernet module, integrated protection device, power module, gas turbine card
HIMA — F3 AIO 8/4 01 F3231 F8627X Z7116 F8621A 984862160 F3236 F6217 F7553 DI module, processor module, AI card, pulse encoder
Honeywell — Secure digital output card, program module, analog input card, CPU module, FIM card
MOOG — D136-001-007 Servo valve, controller, module
NI — SCXI-1100 PCI – PXIE – PCIE – SBRIO – CFP-AO-210 USB-6525 Information Acquisition Card, PXI Module, Card
Westinghouse — RTD thermal resistance input module, AI/AO/DI/DO module, power module, control module, base module
Woodward — 9907-164 5466-258 8200-1300 9907-149 9907-838 EASYGEN-3500-5/P2 8440-2145 Regulator, module, controller, governor
YOKOGAWA – Servo module, control cabinet node unit
Main products:
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