Tom749

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About Tom749

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  • Gender Male
  • Location Kuala Lumpur
  • Country Malaysia
  • Interests PLC

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  1. Hi, there. What is the main difference between Function and Function Block? (Just because of the Data Block....) Please explain or give an information in detail. Thanks for your help in advance.
  2. Hi, I have one question of the DB in siemens plc. What is the exact purpose and concept of DB in siemens plc? Thanks for your help or information of that in advance.
  3. MODBUS COMMUNICATION

    Hi, I have one question about modbus communication by step 7 program such as attachment. Could you explain about that following this step? 1) What is the meaning of the operator? (the red characters) (id_o_a :="CONTROL_DAT", id_0_a) 2) What is the meaning or the purpose of the whole STL program? Thanks for your help in advance.
  4. SCAN TIME PULSE

    Hi, there. I have one question about Scan time pulse in Siemens PLC such as my attached file. Could you explain about the logic at there? Thanks for your help in advance.
  5. IP COMMUNICATION

    I have one question about TCP/IP communication. Is it possible to connect each other such as the attached file between Industrial Ethernet and Modbus TCP at the same Hub equipment? Thanks for your help in advance. (Please, refer to the attached file)
  6. DP communication

    Hi, I have a question about DP communication. That is the relation among the hardware configuration, FB, and DB declaration. Refer the attached pictures for understanding my question. The testing item is Yamaha robot machine using the DP communication. How can those communicate each other by any address mapping? Which information should I give the Yamaha engineer for the address mapping? Thank for your detailed explanation in advance. (Especially the address declaration of them)
  7. Hi, there. I need a help for selecting a Circuit Breaker. I ask the meaning of the terms as following. (1) Frame size rated current [A] ? (2) Rated current In [A] ? (3) Rated insulation voltage Ui [V]? (4) Rated Operational voltage Ue [V] ? (5) Icu [kA] ? (6) Ics [kA] ? Could you explain those in detail? Thanks for your help in advance.
  8. 1 SCAN ON

    Hi, there. Can you explain about this attachment? At first read the #OB_SCAN_1 data, then compare 1 with that. After that the M0.5 set or reset to 1 or 0 following the RLO result. Is it right? Thanks for your help in advance.
  9. Wiring Diagram

    Hi, there. I have a question about an electric wiring such as the attachment. There is some problem at the pointed connection between AC voltage and DC voltage in my mind. Can you explain about that? Thanks for your help in advance.
  10. FLL instruction

    Hi, there. I have one question about FLL instruction. Could you explain about that such as attached file? (For instance, 16#80 -> 16#FFFF FF80 /16#1234 5678 -> 16#78)
  11. Ground Symbol

    I have one question of Ground Symbols. Can you help me to understand those? Thanks for your help in advance. (Refer to the attached file.)
  12. STL structure

    I have two examples of STL structure for Clock Pulse bit by two different programmers. The Clock pulse result is same each other.(0.1s/1s..etc...) But the STL structure and M addresses are different. What is the reason? Can you explain about that? Thanks for your help in advance.
  13. AWL file

    I have questions about AWL file in Siemens PLC as attached pictures. Q1) What is the AWL file in the first picture? Q2) What is the meaning of the structure in the second picture? Thanks for your help in advance.
  14. The meaning

    What is the meaning of this attached picture? I am not familiar with STL structure. Pls help me in details. Thanks for your help in advance.
  15. Analysis of P&ID

    I want to know the concept of the attached P&ID drawing. Please explain the concept of the P&ID drawing inside of the red box.(Boiler Control) Thanks for your help in advance.