How does PLC programming implement stop->run? -Solutions - Huaqiang Electronic Network

Programmable Package SG-8018CA(SG7050C) 0.67M~170M
SMD aluminum electrolytic capacitor
Photocoupler

2 226cpu, I want A main operation, B main monitoring, A is faulty, B sets A to STOP through PPI communication, and then replaces A control. Setting isolation in the program is a bit of a hassle.
I want to know how to change STOP to RUN again? The upper computer is a touch screen.
Answer: 1. If the PPI connection between A and B ends is interrupted, what is the state of the two CPUs?
2. How to connect the external input and output signals to 2 sets of plc (this is actually quite simple, I just reminded the building to mainly consider this problem)
It is recommended that the landlord not use the communication method. It is better to use the hard-wired mode to connect the APLC running signal to the BPLC with the normally closed signal as the blocking signal of all the output signals of the BPLC. If APLC is running, the lock is opened, BPLC can monitor, but can not output all control signals; if the lock is closed, that is, APLC does not run, BPLC automatically outputs all instructions, the switching time is 1 BPLC scan time. Of course, if the APLC is restored, it also needs to be cut back after 1 scan cycle (of course, the external device action also needs to consider the delay such as relay). Whether this method affects the operation status of the external device is related to the wiring of the output channel of the landlord.
Due to the high reliability of hard wiring, it is recommended that the simple control of the landlord is not as good as the hard wiring.
In fact, I suggest that the landlord make two sets of independent PLCs to run at the same time, that is, any PLC works normally, and the corresponding signals can be output to control the equipment, so there is basically no switching time. High reliability. Of course, the building mainly considers the difference between the relay wiring in the two ways of disabling control and the ability to control, and the safety problem when the device is operating.
The disability control refers to the control mode in which the device is connected and operated by the normally closed contact of the relay, that is, the device operates when the relay is not energized, and the relay is charged, but the device stops working. In this way, the output of the two sets of PLCs is normally closed in series or in parallel (depending on the operational safety of the device);
The control can be controlled by the device after the relay contact is turned on. When the power is off, the device stops. In this mode, the output of the two sets of PLC adopts the normally open parallel mode, and any PLC signal is connected to the device;

2.0mm Hard Metric Connectors

Future Bus connectors Description
Future Bus connectors, which use 2mm style have a mating distance of 10mm. Both Future bus and the upgrade Future bus+ are out-dated.No additional work has been done to upgrade the specification over the years. However we still produce products which meet the Physical and Electrical layers of IEE P896.


Antenk future bus connecto feature

designed in metric dirnension on 2 millimeters grid over 5 rows.

1 Standardized product through EIA (USA), IEC and CECC (international).
2 Selected by IEEE as the interconnection system for Futurebus + / SCI / VicBus.
3 Multi-sources product,use for telecommunication, network, server / workstation market.
4 High tempersture materials SMT compatible.
5 Modular design giving flexibility for system design.
6 Stackable end to end without loss of contact position.
7 High density (more than 2 times as compared to the standard inch based " Euroconnector DIN 41612" ).
8 Tuning Fork female contact concept for higher robustness and improved reliability
(low contact resistance and high normal force).
9 Low insertion force design.
10 Inverse connector system (signal and power).
11 Optimized solder and compliant press-fit terminations for backplane and circuit board connectors.

12 differents mating lengths on signal and 3 on power for standard connector system.


Future Bus connectors Application
Telecom backplane board


Antenk offers a complete line of 5+2 and 8+2 Hard Metric Connectors as well as a complete line of 4 and 5 row Future bus Connectors.

4 5 rows futurebus connectors
4 and 5 row Future bus Connectors
4 Rows Signal & Power
5 Rows Signal & Power
Female IDC Type 4&5 Rows
Power Connector & Cable
Shroud


Vertical, 5 Rows
Right Aangle, 5 Rows
Vertical, 4 Rows
Right Angle, 4 Rows

5+2 and 8+2 Hard Metric Connectors

2.0mm futurebus connector
2.0mm Future Bus Connector Male DIP
2.0mm Future Bus Connector Female DIP
2.0mm Future Bus Connector Male Press Fit
2.0mm Future Bus Connector Female Press Fit
2.0mm Future Bus Connector Power Type


2mm HM (hardmetric) Connector Introduction

System designed to meet the current and future needs of instrumentation applications giving excellent electrical and mechanical characteristics. It is a high performance, high density system with flexible configuration which offers upgradeability. The connector system is fully supported by Antenk spice models to guarantee choosing the right product to match the application.


ANTENK 2.0mm HARD METRIC CONNECTOR MODULES comply with international IEC 917and IEC 61076-4-101
standards. The connector systems in telecommunication and other industries require hight density connectors to support
larger amounts of data increasingly higher speeds antenk 2mm hardmetric modules offer the solution
Features and Benefits:
This high density connector modules can be stacked end to end without loss of space.
1,ANTENK developed the 2.0mm series under thorough consideration of impedance match, propagation delay,
cross talk, reflection. It is the ideal connector for digital high speed data application.
2,ANTENK offers differend types with inverted mating configuration. The male connector is a fixed module at the
backplane and the female commector is a free component of the plug-in module. The male connector has 5 signal row.
3 The outer shielding rows z and f of the male connector engage the shielding contacts of the famale connector. theshield
is also designed for gas tight, press-fit installation.
4 The connector system offers 15 contact length that utilize the proven press-fit assembly technique. Within the 15
contact length are 3 mating levels, achievable on both the plug-in and rear I / 0 side.
5 Coding system prevents mix-up and wrong mating between male and female connectors.
6 The 2.0mm hard metric connectors and DIN 41612 connectors can be used on the same PC board as both have the
same mating distance.
7 Staggered make-break pin populations for optional hot-swap capability.
8 Rear pin option for through-the-backplane I/O application.
9 High density PCI capability,shield for EMI/RFI protection.

2mm HM (hardmetric) Connector Features:
High density system with small real estate on backplane and daughtercard
Extensive range of signal, power, coaxial and fibre board-to-board and cable-to-board connections
Modular units give flexible configuration
Special versions for VME64 extensions and CompactPCI
Signal contact rating 1.5a fully energized
Universal power module rated at 7.8A/line, 23.4A fully energized
All lines impedance controlled to 50 (single ended) and 100Ω (differential) nominal
Safe design, complies with IEC950 in mated condition
Universal power module is safe in unmated condition
Several performance levels for board and cable connectors with unshielded and shielded versions
Mismatching keys block mating before any contact touch
Small press fit board hole allows maximum track width and minimum signal corruption
1.4 to 5.6mm (0.055 to 0.220 inch) Backplane thickness range

2mm HM (hardmetric) Connector Applications
Communications & Networking, Computers & Computer Peripherals, Sensing & Instrumentation

Metric Connectors,2.0Mm Hard Metric Connectors,Hard Metric Connectors,Hard Metric Female Connector,2.0mm Future Bus Connector Male DIP,2.0mm Future Bus Connector Female DIP

ShenZhen Antenk Electronics Co,Ltd , https://www.antenkelec.com

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