With most modern PLCs, all you need to start programming or troubleshooting is to plug in your laptop with a plain old ethernet cable. Older PLCs, however, tend to use a myriad of different cables and protocols. With a large number of legacy systems, the original programming cables and software are often long lost by the time you want to make updates or need to troubleshoot an issue.
DF1All you need is a regular female-to-female null modem crossover DB9 serial cable, and a USB to RS232 adapter if your computer does not have a serial port. The official A-B cable is 1747-CP3.
slc 500 dh to serial cable
DH-485This protocol requires a special USB converter, the 1747-UIC, which you can order from A-B or find a number of 3rd party versions online. In addition, you will need the female-to-female null modem crossover DB9 serial cable or a straight-through RJ45 ethernet cable, depending on which port you want to connect to. Make sure you also set the selector switch to RS232 or RS 485.
I think the Channel Zero was reconfigured for use with the HMI and so cannot be used for programming now. Connect with the UIC driver and cable and set the Channel Zero port to factory defaults. This has fixed this for me more than once. I'm having this issue today, but can't find the factory defaults.
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With RS232 to DH+ Passthru, we will connect through the serial port on a processor, and access the DH+ network. With this in mind, another option would be the 1784-U2DHP. However this device might cost around $2,000 to purchase. In this case, we will simply use an existing processor to access the DH+ Network through a Serial cable. The disadvantage of course is about half the speed of a typical DH+ network. For example, this processor is connected to a DH+ network, and we have a NULL modem cable connected to Channel 0. Note: The recommended (proper) cable to use on DH+ is Belden 9463. Remember this is just for example only. Your application and safety considerations may be different, so always take all precautions.
Panel Interface Connector with A-B SLC 500 DH-485; DB9 Serial (computer inside enclosure) with 7 FT cable; Category 5e RJ45; Panel Mount Housing; UL Type 4; GFCI Duplex Inside-Outlet; 3 Amp Circuit Breaker
Plus, having a good understanding of how to set up communications from your PC to your PLC with the serial protocols will help when you need to use other communication options such as Ethernet and USB.
Hey there guys. It's Stephen Gates here with my PLC training.com and you've got another video today to help you become a confident PLC programmer. So in this video we're going to look at how to connect your computer to a PLC, the old school way, which is using an RS-232 serial cable.
Thankfully we don't need serial cable connections as much anymore since we have Ethernet and USB on most new controllers. But you still may need to connect to an older PLC using a serial connection. So let's start here.
Step 2: set up your computer so it's ready to connect to the PLC. This might mean setting an IP address on your computer or configuring a comm port for serial USB or other communication types. In this case, we just need to make sure the comm port gets configured.
Okay, let's jump right in. Step one, this one's pretty easy. First, grab your RS-232 serial cable to connect from your PC to a PLC. So if you have a computer that's newer than 10 years old and you probably do not have a serial port, but that's okay because there's a lot of USB to RS-232 adapter cables that you can buy for 20 bucks or less.
So, this is what I've got here. This is the serial side or the RS-232 side. And there's the USB. So most PLCs with RS-232 ports have the classic DB-9 connector port, which looks like this. Get this cable ready for your controller.
Most people have seen this. It's the classic DB-9 port. So you most likely need a USB to RS-232 adapter that has a DB-9 connector on the end, but you also need a null modem cable or a way to switch your PLC adapter or to switch your adapter to a null modem connection.
So what's null modem? Basically all it is is a serial cable with a couple of the pins that are swapped from end to end. So instead of a cable like this, or each pin on one end is wired to the corresponding pan on the other end, there is one pair of wires that is swapped pin two and three.
So in my case, I have a MicroLogix 1100 PLC that I want to connect to. So I plug in my USB-to-serial adapter. Now one thing about this MicroLogix 1100 is that it needs a mini din connector instead of the classic DB-9. So this cable that I just showed you converts from the DB nine to the mini din connector.
Step two when you plug in your serial cable on most windows PCs or shouldn't be much to do, your computer should see it and automatically download. Install the correct hardware driver for your USB to serial cable to make sure it does.
I recommend being connected to the internet when you plug the cable in for the first time. That way your computer can go out searching and retrieve the correct driver. If it does not automatically install the driver, then you'll have to determine what kind of cable you have and go manually search for and download the correct driver.
So if you have windows 10, the best way to do this is just to open up the start menu and type in the device manager. Utilities should show up here. Just click it to open it up. So from here we want to go to comm ports or ports. And we can see we have an item here called USB serial port and it's been assigned to comm.
Depending on your cable you might see something a little bit different here, but it should be descriptive. USB to RS-232 or something here to show you that you've plugged in your cable and it should assign a number. COM 3, COM 4, COM 15...it depends.
And then we're going to go to communications and configure drivers. So as you can see there are quite a few driver types that you can choose from. And basically that means there's a lot of different types of communication cables and protocols available to connect to the different Allen Bradley PLCs.
And finally, number three, what communication cables or adapters you have available to connect between the two. So again, in our case we'll use the DF1 driver cause we have an RS-232 connection from the computer to the PLC. So we'll add new and we'll go with the default name.
So now that we've selected it, we'll need to configure the driver. So the first thing to configure is the comm port. So earlier when we looked at Device Manager, we determine that our USB serial port was connected to COM 3. So from this COM PORT drop-down menu we'll choose COM 3.
If you don't get that, you may have the incorrect cable or you may not have a no modem cable that's converting the pins. The way you need to to connect to the PLC could be a number of different things. But at the end of the day you want auto configuration successful.
Looking at the table, we can see that, although there is only a single generation gap, ControlLogix 5580 or 5570 are quite homogeneous. In controller connections, there is quite a difference in both processors. 500 connections are applicable to ControlLogix 5570 whereas there is no connection supported by 5580. ControlLogix 5570 features an Ethernet / IP port with a maximum speed of 100 Mbps, which is a previous generation controller. On the other hand, 5580 can go up to 1 Gbps, which is a huge speed and reliability improvement.
The idea behind Fieldbus is to eliminate any point-to-point links between the field devices like actuators and sensors and their controllers by a single digital connection on which all the information is communicated consecutively in serial order and multiplexed over time.
The DL3500 DF1 side has many physical options to connect serially though RS232, RS422, RS485 & USB with baud rate setting configurable range from 4800 to 115200 baud and the DH+ with baud rates of 57.6KB, 115.2KB and 230KB, the DL3500 can be powered from the USB or an external DC 9-27V.
It is important here to note that ControlNet cables are the RG-6 coaxial cable types with the BNC connectors. The connectors of BNC can either comprise of a twist on and locking type. It also sports a rugged design that is of the threaded screw type. This screw threaded design helps you to make sure that it can withstand harsher environments.
The 1747-PIC SLC 500 RS-232 to RS-485 Interface Converter by Allen-Bradley is a device that allows RS-232 devices like the SLC 5/03, SLC 5/04, SLC 5/05, MicroLogix 1000, 1200, and the 1500 to connect to a DH-485 network. It has a 25-pin connector for interface pin-out, a 2-pin connector to transmit data from the PC to the converter, a 20-pin connector for a PC and a converter, and a 3-pin connector for receiving RDX Data from the converter to the PC. The 1747-PIC works best with the built-in COM1 and COM2 serial communication ports. It is not compatible with the USB-to-serial adapter and it does not support serial port extender boards which extend the COM port capacity. It has dimensions of 13cm x 10cm x 20cm and weighs approximately 0.29 kg. 2ff7e9595c
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