A-B companies the use of SLC series PLC communication
PLC products dazzling, there are some old old, like Siemens, Mitsubishi, AB, etc., there are some emerging new products, due to different manufacturers, in the specific product structure and network software programming function that there are differences , we have the laboratory school students since 1992, the United States have been using AB's PLC-5 family of products, mainly SLC500 series, including SLC5/01, 5 / 02, 5 / 03 in three models, the respective input and output modules 8:00, 16:00 and 20:00, there are a small number of 30 points and 40 points of I / O for the use of laboratory development, the author more than a year, has been committed to PLC and a number of pilot projects to develop, on the AB's SLC500 product development and the use of accumulated experience, to introduce the product in view of the current use of the article much, wrote this article, and your colleagues to discuss
1, Company Profile
Is produced by the United States AB PLC, one of the major manufacturers. 90 years the company's PC sales accounted for the total PC market, the United States for more than half of sales. The company offers all types of PC, from a single control in order to adapt to large-scale factory automation to the different needs of the production of the PLC-5 family includes three small SLC500 and other PC models PLC-5/10 and eight medium-sized PC, etc. models. The series processors with similar characteristics and has a typical upward compatibility, in addition to commonly used functions with instructions, but also with the order of the functional flow chart (SFC> programming and PID command structure.
2, ladder programming software for the use of APS
AB programming software provided APS, access to the software, the implementation of APS. BAT, the main menu screen to appear, respectively, shows the F1-F10 features a total of 10 menu, press the F key difference, the corresponding optional feature. Programming is divided into online programming and off-line programming, the general use of the money away from programming for the first, and then debug earlier. Steps to: Select F4 (OFFLINE CONFIG), there already exist. HEX file, if you want to edit or the implementation of these documents, in accordance with the cursor up and down keys to select the file, then the document for a significant anti-white, and then F3 (SELECT FILE), then press F8 (ACCEPT), then F3 (OFFLINE PRG / DOC), then the lower right corner of the screen, showing that you want to edit the file name FILE: × ×; At the same time the bottom of the screen appeared the Edit menu (F7-F8>, this time press F8 (MONEOR FILE> can move on to the next Edit menu level, the framework appears ladder (from bottom to top, not only from the (END> started> at this time the election F10 (EDIT> can move on to the next level, the Edit menu (F3-F9>, the meaning of the function keys are :
F3 (APPEND RUNG): two lines to insert a space between the line of logic:
F4 (INSERT RUNG): in this logic to insert a line of logic above the line:
F5 (MODIFY RUNG): the logic of line editing, including logic-bit instructions <BIT>, timer / counter (TIMER / COUNTER), compared Directive (COMPARE), the arithmetic instructions (MATHL shift instruction series also (MOVULOGIC), file commands ( FILE, the order of command (SHIFT / SEQNCER) command control (CONTROL>, special instructions (SPECIAL), the use of specific instructions, see the instruction set SLC500:
F6 (DEIZTE RUNG): delete the logical line:
F7 (UNDELETE RUNG): the restoration of deleted line:
F8 (ADVANCED EDITING): Senior Editor:
F9 (TEST EDITS): Editor test:
End of a logical line editing after the first press the ESC key to exit, and then F10 (ACCEPT RUNGL then continue to the next line of the editor.
If the need to generate a new one. HEX file, in the election of F4 (OFFLINE CONFIG> after the election of F6 (CREATE FILE), and then with you to choose the PLC processor is operating in line PROCESSOR models, generally have a label on the device, the step is more crucial when the initial author did not increase as a result of the attention, the wrong model, then edit the ladder diagram in the concrete, the screen is always prompted to I / O point address mistakes and spent a long period of time to find out the root causes of errors. After selecting the processor, according to I when you have selected will appear in the PROCESSOR name CREATE PROCESSOR FILE the file box, and then F8 (ACCEPT> exit, and then select the file just now emerging, according to the above-mentioned method for editing.
3, the network function
SLC500 Series PLC network using DH-485 link data link, which has the following functions:
32 devices connected; multi-master function; token (TOKEN> transmission access control: continuous increase or remove the function of node-link: Link to the maximum length of 4000 feet
DH-485 data link to "daisy chain" form of each individual link to connect to the PLC coupling device, and then coupling device through the link associated with the programming station, a typical connection in the above chart:
DH-485 can support the SLC500 data link equipment, including:
SIC500 fixed I / O controller (transponder>; SLC5/01 modular controller (transponder>; SLC500 can run high-level programming of the personal computer software (initiator>: SLC-5/02 modular I / O controller (initiator)
4, bus
These are just the authors own experience, SLC500 Series PLC there are many aspects of the application is worth studying.
Source: [http://www.jdzj.com] Electrical House! Reporter unknown! |
