Ab PLC Cables Drivers Sample
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These slides and attached demo video compliment our Complete Video DVD on the topic mater. To see the AB Cables – Drivers DVD, click http://www.bin95.com/Industrial-Training-Videos/AB-PLC-Cables-Drivers.htm Also see http://www.bin95.com/Industrial-Training-Videos/plc_training_videos.htm for a complete 10 DVD PLC Course.
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Ab PLC Cables Drivers Sample
- 1. Copyright 2009 Business Industrial Network www.BIN95.com Sample of … Allen Bradley PLC Cables and Drivers These slides and attached demo video compliment our Complete Video DVD on the topic mater. To see the AB Cables – Drivers DVD, click http://www.bin95.com/Industrial-Training-Videos/AB-PLC-Cables-Drivers.htm See www.BIN95.com to learn more about our PLC training.
- 4. PLC Protocol… Copyright 2009 Business Industrial Network www.BIN95.com
- 5. DH 485 Data Highway Plus Ethernet PLC languages…(protocol) DeviceNet ControlNet RIO DF1 Profibus Copyright 2009 Business Industrial Network www.BIN95.com
- 6. 5/03 5/04 5/05 RS 232 Section 1… RS 232 Communication Hardware Copyright 2009 Business Industrial Network www.BIN95.com
- 8. MicroLogix Section 1: RS 232 Communication Hardware... Continued Copyright 2009 Business Industrial Network www.BIN95.com
- 9. COMM 1 Lap Top RS 232 Driver 5/03 NULL MODEM CABLE RS 232 null modem cable. Section 1: RS 232 Communication Hardware... Continued Copyright 2009 Business Industrial Network www.BIN95.com
- 10. 5/04 USB to RS232 Adapter Cable NOTE: Use A/B 1747-UIC USB Lap Top RS 232 Driver When your lap top isn’t equipped with a 9 Pin RS232 Connector…. Radio Shack Section 1: RS 232 Communication Hardware... Continued Note: Using a USB is the LEAST preferred method. Copyright 2009 Business Industrial Network www.BIN95.com
- 11. PCMCIA Section 1: RS 232 Communication Hardware... Continued ..a better alternative! Copyright 2009 Business Industrial Network www.BIN95.com
- 12. ALLEN BRADLEY PIC Box 5/05 PCMK Driver PCMK RS 232 PCMK - A/B Pic Box Section 1: RS 232 Communication Hardware... Continued Copyright 2009 Business Industrial Network www.BIN95.com
- 13. Section 1: RS 232 Communication Hardware REVIEW. PCMA card requires a PIC Box…avoid if possible. BEST CHOICE… RS232 Null Modem cables AVOID using a USB if possible. Using a PCMCI is a better alternative. Copyright 2009 Business Industrial Network www.BIN95.com
- 14. Section 2… RJ485 / DH 485 Communication Hardware RJ485 / DH 485 Uses standard RJ 45 connector 5/01 5/02 5/03 Copyright 2009 Business Industrial Network www.BIN95.com
- 15. Lap Top RS-485 is a standard industrial electrical specification (protocol) for sending serial data. DH 485 is an Allen Bradley Proprietary Protocol To communicate, you need a protocol converter.. PIC Box or PCMK Card Section 2… RJ485 / DH 485 Communication Hardware ... continued PCMK RS-232 Lap Top ALLEN BRADLEY PIC Box 1747-PIC Copyright 2009 Business Industrial Network www.BIN95.com
- 16. 5/03 The PCMK card allows a notebook computer to interface with other devices on both DH+, DH485, and remote I/O communication networks. Section 2… RJ485 / DH 485 Communication Hardware ... continued Lap Top PCMK DRIVER PCMK Copyright 2009 Business Industrial Network www.BIN95.com
- 17. 5/04 Lap Top PCMK DRIVER PCMK Section 3… DH + Communication Hardware The 3-pin connector, provided with the SLC 5/04 processors, is for actual DH+ communication. 1 DH+ Data Line 1 2 Shield 3 DH+ Data Line 2 The 8-pin connector is for monitoring DH+ communication. DH+ Channel 1, 8-Pin 1 DH+ Data Line 2 2 No Connection 3 Shield 4 No Connection 5 No Connection 6 DH+ Data Line 1 7 No Connection 8 No Connection NOTE: This 9 pin is NOT RS232 Copyright 2009 Business Industrial Network www.BIN95.com
- 18. 5/05 ETHERNET Lap Top ETHERNET DRIVER Section 4… Ethernet Communication Hardware An unlimited number of nodes on a single network are possible compared to DH-485 (32) and DH+ (64) Copyright 2009 Business Industrial Network www.BIN95.com
- 19. Copyright 2009 Business Industrial Network www.BIN95.com
- 20. Copyright 2009 Business Industrial Network www.BIN95.com
- 21. Copyright 2009 Business Industrial Network www.BIN95.com
- 22. Hardware Troubleshooting It is quite often very difficult to find specific problems on a network. The most important rule of thumb is: Never assume that any connection, terminator, wire, or any other aspect of the network is correct until you have checked it. Problems are often found where they are deemed to be impossible Copyright 2009 Business Industrial Network www.BIN95.com
- 23. Copyright 2009 Business Industrial Network www.BIN95.com
- 24. Copyright 2009 Business Industrial Network www.BIN95.com Go To www.BIN95.com today For more Industrial Training …
Editor's Notes
- PLC Training by Business Industrial Network 12/29/03 www.bin95.com Business Industrial Network www.BIN95.com These slides and attached demo video compliment our Complete Video DVD on the topic mater. To see the AB Cables – Drivers DVD, click http://www.bin95.com/Industrial-Training-Videos/AB-PLC-Cables-Drivers.htm Also see http://www.bin95.com/Industrial-Training-Videos/plc_training_videos.htm for a complete 10 DVD PLC Course.
- A SLC processor communicates across the backplane to I/O modules in the same chassis in which the processor resides. Various models of SLC processors have various on-board ports for communication with other processors or computers. Each processor has one or two built-in ports for either EtherNet/IP, DH+, DH-485, or RS-232. Separate modules are available to provide additional communication ports for communication with other processors, computers, and remotely located I/O. Note that these are only the electrical connection and do not specify the protocol or language used on the connection necessary to communicate. PLCs with a RS232, RS422, RS485 or ethernet port cannot talk to each other unless they use the same protocol . The classical example is an American trying to talk to someone in France. There are several ways that you can connect to someone in France (telephone, e-mail, cell phone, fax machine, television, etc.) and these connections are the equivalent of RS232, RS422, RS485, and Ethernet. But just because you can call ( connect with) someone in France does not mean that you can communicate. If the American does not speak French or the French person does not speak English -- you will not communicate. The language that PLCs speak is more commonly know as a "protocol" . So it takes both -- a connection and a protocol . Most industrial automation communications standards specify the connection and the protocol . For example if two devices both talk DF1 then you know that they (most likely) have RS232 ports and can both communicate with each other using the same language (the DF1 protocol). Likewise if two devices talk Profibus DP (there are multiple variations of Profibus: DP, FMS, etc.) then you know that they will talk using RS485 and they can communicate. More about protocols…next 2 slides
- PROTOCOL: The language that PLCs speak is more commonly know as a "protocol" . In information technology, a protocol is the special set of rules that end points in a telecommunication connection use when they communicate. Protocols exist at several levels in a telecommunication connection. Protocols are often described in an industry or international standard. NOTE that just because several PLCs all have Ethernet connections does not mean that they can talk to each other because they speak different languages ( protocols )! It would be like saying you could talk to anyone in the world just because they have a telephone (although you do not speak their language). Likewise, PLCs with a RS232, RS422, or RS485 port cannot talk to each other unless they use the same protocol .
- Each PLC manufacturer has their own protocol or language that the PLC speaks. For example, Allen-Bradley (Rockwell) PLCs talk DF1, Data Highway 485 (DH485), Data Highway (DH), Data Highway + (DH+), Remote I/O (RIO), Devicenet, Controlnet, and a few others. The most common "standard" protocols we see are DF1 and Profibus. DF1 is popular because it has been around longer than many of the people using them. DF1 ( point-to-point protocol) allows two devices to communicate with each other at the same time. Profibus is popular because it combines the best of simplicity (daisy chain, twisted pair), industrial ruggedness (RS485), speed (12 MBaud), adaptability (you can select from many different speeds), scalability (from simple COM port up to communications controllers), and function (most automation devices can talk Profibus). Typically all PLC manufacturers will have a PLC module that will talk these protocols. Now that Ethernet is becoming the "most hyped" capability in automation there are several protocols over Ethernet. But remember -- just because an Allen-Bradley and a Siemens PLCs are both put on the same Ethernet cable -- they cannot talk to each other because they do not use the same protocol. ASCII
- Serial Network The SLC 5/03, SLC 5/04, and SLC 5/05 processors have a serial port which is configurable for RS-232 compatible serial communication. The serial port connects to devices that: _ communicate using DF1 protocol, such as modems, communication modules, programming workstations, or other Encompass partner devices. _ communicate using DH-485 protocol. _ send and receive ASCII characters, such as ASCII terminals, bar code readers, and printers. When configured for system mode, the serial port supports DF1 protocol. Use system mode to communicate with other devices on the serial link.
- Communication as defined in the RS232 standard is an asynchronous serial communication method. The word serial means, that the information is sent one bit at a time. Asynchronous Transmitted data is grouped in blocks of 8bits with a start and stop bit, this informs the receiver that the character has been sent, while this is efficient it increases the packet size because of the added control bits for each character. Information is not sent in predefined time slots. Must use a null modem cable: There are 2 types of RS232 Devices. The first is called a DTE device. DATA TERMINAL EQUIPMENT. The second DTC Data Communication Equipment. If both your PC and PLC are DTC or DTE they can’t communicate. If you connect two DTEs or two DCEs using a straight serial cable, the TD pins on each device are connected to each other, and the RD pins on each device are connected to each other. It would be like 2 mouth pieces on a phone connected together and two ear pieces connected together…you will never be able to communicate. Therefore, to connect two like devices, you must use a null modem cable. As shown in the following diagram, null modem cables cross the transmit and receive lines in the cable.
- RS-232(C) cable is the interface that your computer uses to talk to and exchange data with other serial devices…in this example MicroLogix Micrologix has RS232 port and uses a regular 9 pin serial communication cable…PS2 RS-232 (C ) is a long-established standard ("C" is the current version) that describes the physical interface and protocol for relatively low-speed serial data communication between computers and related devices RS232. This is an IEEE standard for serial communications that describes specific wiring connections, voltage levels, and other operating parameters for electronic data communications. The most common "standard" protocols we see is DF1 . .
- RS-232 RS-232(C) is a long-established standard ("C" is the current version) that describes the physical interface and protocol for relatively low-speed serial data communication between computers and related devices. RS-232C is the interface that your computer uses to talk to and exchange data with other serial devices. RS232. This is an IEEE standard for serial communications that describes specific wiring connections, voltage levels, and other operating parameters for electronic data communications. The most common "standard" protocols we see is DF1
- If your lap top does not have a RS232 port you will need to convert from USB to RS232. NOTE: This is the least preferred method to use: More set up of the software More possibilities of communication driver conflicts If you have to use a USB to RS232 converter use AB 1747-UIC or PLCCABLES.COM Radio Shack’s cable, although comparatively inexpensive, this cable is less reliable. NOTE : USB WILL NOT WORK WITH A PIC BOX! PIC boxes are looking for com ports specifically! The PIC box electronics converts RS232 to RS485… if it COULD work, it would have to convert from USB to RS232 to RS485.
- Instead of using a USB converter cable, a PCMCIA card is a better alternative. What is PCMCIA? The Personal Computer Memory Card International Association (PCMCIA) is an organization that defines standards for connecting peripherals to laptop or notebook computers. The standard ISA, EISA, PCI, and VLB buses are too large for laptop computers; the PCMCIA PC Card is an accepted notebook standard. The card has a RS232 connector attached to the card. Because it doesn’t use a USB, it doesn’t use com ports, therefore there’s less communication conflicts and more reliable. PCMCIA will work with a pic box
- PCMK Card Since personal computers have become smaller, a need for smaller storage media developed. The PC card is a small form-factor adapter that adds memory, storage,and I/O capabilities to these smaller computers. We recommend that you attach the wedge that is provided with your cable to the computer. This wedge provides strain relief for the cable and secures the cable to the computer so the cable is not accidentally disconnected. If you do not use the wedge and the cable disconnects, it can damage the connector on the cable and PCMK card. Credit-card size, 68-pin add-in cards that were designed to meet PCMCIA standards: PCMCIA: The Personal Computer Memory Card International Association (PCMCIA) is an organization that defines standards for connecting peripherals to laptop or notebook computers. The standard ISA, EISA, PCI, and VLB buses are too large for laptop computers; the PCMCIA PC Card is an accepted notebook standard.
- Use this slide as a review of the different cable options using RS232 and the use of drivers associated with each.
- Use with SLC 5/01_5/02_5/03 DH-485 DH-485 communication network is a multimaster, token-passing network protocol capable of supporting up to 32 devices (nodes). This protocol allows monitoring of data and processor status, along with program uploading and downloading of any device on the network from one location SLC processors to pass data to each other (peer-to-peer communication) operator interface devices on the network to access data from any SLC processor on the network Uses standard RJ45 Connector RJ-45 (Registered Jack-45) is an eight-wire connector used commonly to connect computers onto local-area networks (LAN), especially Ethernets
- RS-485 is standard industrial protocol for sending serial data . It uses a pair of wires to send a differential signal over distances up to 4000 feet without a repeater. RS-485 is one of the most popular communications methods used in industrial applications where it’s noise immunity and long-distance capability are a perfect fit. RS-485 is capable of multi-drop communications – up to 32 nodes Ability to communicate at faster communication rates. Uses standard RJ 45 connector _____________________________________________________ DH 485 is an Allen Bradley Proprietary Protocol. The DH-485 communication network allows devices on the plant floor to share information via the network. Aapplication programs can: Monitor process and device parameters and status, including fault and alarm detection. Perform data acquisition. Perform supervisory control functions. Upload/download PLC programs over the network. The network offers connection to up to 32 nodes Token passing access control Has the ability to add or remove nodes without disrupting the network. DH-485 supports slave devices and features multiple-master capability
- Since personal computers have become smaller, a need for smaller storage media developed. The PC card is a small form-factor adapter that adds memory, storage,and I/O capabilities to these smaller computers. We recommend that you attach the wedge that is provided with your cable to the computer. This wedge provides strain relief for the cable and secures the cable to the computer so the cable is not accidentally disconnected. If you do not use the wedge and the cable disconnects, it can damage the connector on the cable and PCMK card. Credit-card size, 68-pin add-in cards
- Data Highway Plus (DH+) The Data Highway Plus protocol is used by the SLC 5/04 processor. This protocol is similar to DH-485, except that it can support up to 64 devices (nodes) and runs at faster communication (baud) rates Blue Hose" is a term used to describe the twinaxial communication cable use by Allen-Bradley Company for their Data Highway communication network. This cable has a light blue color insulation sheathing and is very flexible. It does resemble a blue hose. The DH+ network is a local area network designed to support remote programming and data acquisition for factory-floor applications. DH+ communication modules to implement a peer-to-peer network. The DH+ network supports daisy-chain and trunkline-dropline configurations. The node numbers on a Data Highway Plus network range from 0-77 octal (0-63 decimal). The A-B DH/DH + device driver communicates with the controller through the serial port of the computer. No special hardware needs to be installed in the computer to communicate with the controller.
- IP ADDRESS: I nternet Protocol This network provides the same capabilities as DH+ or DH-485 networks, plus: SNMP support for Ethernet network management SLC 5/05 Ethernet data rate up to 40 times faster than SLC 5/04 DH+ messaging ability to message entire SLC 5/05 data files an unlimited number of nodes on a single network are possible compared to DH-485 (32) and DH+ (64) Ethernet is a local area network that provides communication between various devices at 10 Mbps
- In the chart above, center is a PCMK card. On the left-hand side we show a DH+ cable that connects one end into the PCMK card and the other end of the cable goes into the top port on the SLC 504. If you take the 9 pin to PS2 type converter off the end of the cable that plugs into the PLC, you now have a proper gender 9 pin connector to plug into the PLC 5. Remember, just because it has 9 pins, it is not standard RS232. This 9 pin connection is wire for DH+ which is an Allen Bradley proprietary protocol for PLC communication. The cable on shown on the right in the picture above also uses a PCMK card. The cable on the left is used for RJ485 (Also known as DH485), when you have a PCMK card. RJ485 is a standard industrial protocol. This PCMK to RJ485 cable is a replacement for the PIC box. (The PIC box is not show here, but is a cable set-up for converting PC RS232 to PLC RJ485.) The PCMK cable is the preferred method of communicating with a PLC primarily because you can view and access the DH+ with it. But the much faster communications is a nice feature too. Because of these features and the fact it is the only way to communicate with older PLC 5s, is much more expensive than all other cable set-ups.
- The picture above shows some low cost alternates to the more expensive Allen Bradley OEM PCMK card cable set-up. You can utilize these cable types only if you have the PLC types that accept these cables. For example the SLC 504 which has a DH+ port, also has a standard 9 pin RS232 Port below it. The RS232 port uses a standard 9 pin cable (pictured on the left) you can purchase at any computer supply store for about $15. Compared to the DH+ cable, the RS232 is slower communications, but it is very reliable. On the right-hand side, you see an alternate cable to the RJ485. The non-OEM RJ458 replacement cable is made by plcables.com and cost about $45. With the PCMK method you would have to spend around $2000, the Allen Bradley “PIC box” method would cost around $300 and the reliability is not as has with the PIC box due to all it’s cable connections and electronic circuit design. There are other 3 party non-OEM replacement cables out there, but none we have tested have the reliability that plccables.com cable has. This cable is used for the RJ485 port on the SLC 501, 502 and 503 as well as the older fixed PLC units (“Brick PLCs”).
- The cable selection chart shown organizes the various cables used to access Allen Bradley’s PLC 5, SLC 500 series and their Micrologix controller. The DH+ and Ethernet columns show cable choices if you want to view and access, PLCs that are networked together. The Data Highway Plus is a secure industrial network, the Ethernet would be a less secure network common to computer networks. The RJ485 and RS232 columns have cables that would be your second choice if your PLC does not have DH+ or Ethernet connection capabilities. RJ485 is a standard industrial communication protocol while RS232 is standard to computers. If your computer does not have a 9 pin serial port (RS232) on it or a PCMCIA to RS232 Port Replicator, you will need to use an additional cable to convert from USB to RS232. Converting from USB is the least desired of all connections, as there will be more to the set up of software and more possibilities for communication driver conflicts. If you have to use a USB to RS232 converter, go with Allen Bradley’s UIC cable or PLCCables.com cable.
- Each processor has one or two built-in ports for either EtherNet/IP, DH+, DH-485, or RS-232 (DF1, ASCII, or DH-485 protocol) communication.
- PLC Training by Business Industrial Network 12/29/03 www.bin95.com Business Industrial Network www.BIN95.com Also see http://www.bin95.com/Industrial-Training-Videos/plc_training_videos.htm for a complete 10 DVD PLC Course.