The difference between BAS hard wired interface and communication interface

A hard wire is a control circuit consisting of wires, contacts, switches, etc., and should not include logic devices.

I don't know about those chips of yours, if they are domestic or of lower quality, it is recommended to replace them. If the chip quality can be guaranteed.

Check your hard-wired connection, the serial slogan in the software is whether the com number is set correctly (whether the com number in the device manager is the same as the com set in your software to receive and send), and then check whether the configuration is correct, such as baud rate, etc. If there is a problem, explain the details well and make it easy to answer.

The difference between fieldbus connection and hard-wired connection is that the anti-interference ability is different, the accident probability analysis is different, and the construction cost is different.

First, the anti-interference ability is different.

1. Fieldbus connection: The fieldbus connection has strong anti-interference ability and fast transmission speed.

2. Hard-wired connection: The anti-interference ability of hard-wired connection is weak and the transmission speed is slow.

Second, the analysis of accident probability is different.

1. Fieldbus connection: The fieldbus connection cannot be transmitted through digital technology, and the certain accident probability cannot be obtained.

2. Hard-wired connection: Hard-wired connection can use deterministic theory for accident probability analysis.

Third, the construction cost is different.

1. Fieldbus connection: the construction amount of fieldbus connection is small, which saves cable space and lowers the cost of cable construction.

2. Hard-wired connection: The construction amount of hard-wired connection is large, especially when a large number of transmissions are carried out, and the cable construction cost is high.

Communication has the following advantages:

1.If a large amount of communication is required, the construction volume is saved and the cost is low.

2.It can be read with rich information, such as io values, intermediate variable values (such as date, time strings, etc.), and other information can be transmitted.

Communication has the following drawbacks:

1.Both parties need a special communication interface or template, and if the amount of communication required is small, the cost of this is not worth it.

2.There is only one wire, and if there is a problem with this wire, the entire communication is interrupted, especially when important chains are involved, which can be problematic.

3.If something goes wrong, it may be difficult to find.

Hardwiring has the following advantages:

1.High reliability, even if one variable is problematic does not affect the transmission of other variables.

2.Problem finding is relatively straightforward.

Hardwiring has the following disadvantages:

1.The construction amount is large, especially when a large number of transmissions are carried out, and the cable construction cost is high.

3.There is a limit to the information that can be transmitted.

For example, the more classic application is the monitoring and interlocking protection of vibration and displacement of important units such as compressors. If it is involved in the control interlock, it needs to be hardwired, after all, the reliability of communication is not so high.

The above are all excerpted from Oceanpower Chemical Industry Forum Network.

The fieldbus is running the signal; The hard line runs on the power supply. Usually. Sometimes, when the connection is not standardized, a hard wire is also used instead of a fieldbus. The quality of communication in such an installation is undoubtedly unguaranteed.

The hard wire is actually a kind of wire used to transmit signals, such as network cables, TV cables and other network cables that transmit signals through the network head.

Now a 1-meter network cable is about 1 RMB.

It's not expensive, and it's not clear what the signal is.

If you still have questions, you can send a message.

Hard-wire wire rod, referred to as hard-wire, refers to high-quality carbon steel wire rod with high carbon content, which is mainly used for the production of carbon structural steel wire, bead steel wire, steel wire rope, spring, steel core aluminum strand, prestressed steel wire and steel nails.

Material and use.

It is used to make all kinds of steel nails, wire ropes, steel strands, hose steel wires, bead steel wires, spring steel wires, etc., which are used for the production of high-voltage cable ground wires, opew fiber bundle composite overhead ground wires, and aluminum-clad steel wires are used to make steel wire ropes, aluminum-clad steel wires, hose steel wires, fishing net wires, etc.

Hard wire is actually a kind of wire used to transmit signals, such as network cables, TV cables and other network cables are transmitted through the network head Now 1 meter network cable is about 1rmb Not expensive What is the specific signal is not clear If you still have questions, you can send me a message Hard wire rod, referred to as hard wire, refers to high-quality carbon steel wire rod with high carbon content, mainly used for the production of carbon structural steel wire, bead steel wire, wire rope, spring, steel core aluminum strand, prestressed steel wire and steel nails. Material and use Used to make all kinds of steel nails, wire ropes, steel strands, hose wires, bead wires, spring wires, etc. Used in the production of high-voltage cable ground wires, opew fiber bundle composite overhead ground wires with aluminum-clad steel wires Used to make wire ropes, aluminum-clad steel wires, hose steel wires, fishing net wires, etc

CAN wire, twisted pair, and brown wire are intertwined, and to put it bluntly, they are ordinary copper wires that are intertwined with each other and are used to transmit waveform signals.

The LIN line also transmits signals, and I don't know the main signal line, if it does not work, it will not affect the normal driving, but it will affect the comfort system, such as glass lifting and the like.

Otherwise, just electrify, I understand.

Communication network to DCS generally refers to the defeat of the field over Ethernet.

Or the profilebus connection can be used to transmit the signal through the communication network. Hard-wired connection refers to the direct detection of the key and the use of wires to direct the signal to the DCS.

DCS is called the basic system of distributed control in the domestic automatic control industry, and Sun Yanjin communicates to DCS is the communication between external equipment and DCS main control unit, which can communicate through Ethernet, optical fiber, etc. As for the hard-wired to the jujube cracked DCS, I don't understand what you mean, if you say that the communication method is hard-wired, wireless transmission is rarely used in DCS. In other words, the communication between the distribution module and the main control unit under the DCS has never been seen using wireless transmission.

DCS communication and hardwiring are two concepts that are often encountered in engineering.

Data transmission between the DCS and third-party devices often uses a communication method. Generally speaking, third-party equipment such as compressors, vacuum pumps, etc. will have a set of control system randomly, and the control scheme of the equipment itself is realized by the random system, and the system is generally PLC. Due to the large number of instrument signals, the pure answer of the friends uses PLC communication card + communication cable + DCS communication card to realize the communication between PLC and DCS.

Of course, the two sides of the communication protocol should be consistent (such as profibus, modbus, Ethernet, etc.), and the communication cable is twisted pair, special cable, optical cable, etc., which should be selected according to the communication distance, protocol type, etc.

In addition to communication, the instrument signals displayed by DCS can be said to be hardwired. The types of field instruments are different, and the output signals are different, so each instrument and each loop need to be connected to the input card corresponding to the DCS through the instrument signal cable, which is called hard wiring.

That's it in a nutshell.

Because all Canon machines come with motors. Canon's mount was improved during the EOS film period to use a larger aperture. It is not compatible with manual lenses from the past.

All the machines after that also did not have motors, as the newly designed lenses had motors. Nikon, on the other hand, has been using the F-mount, and in order to be compatible with both old and new machines, a number of body motor lenses with aperture rings have appeared. So it's a bit confusing at the moment.

Nikon is more of a user's choice, and Canon is more of a technology chase, so there's nothing wrong with that.