Basic Overview of ET200 SP HA

-
Image
The high-performance I/O system SIMATIC ET 200SP HA – perfectly matched to the requirements of the process industry and with clear advantages wherever ruggedness and maximum availability are important in the process and manufacturing industry. Benefits Availability: Redundancy at the PROFINET interface (S2 or R1) Hot swapping during runtime station expansion possible during runtime Easy to Use: Compact modules with permanent wiring. One terminal block for all 24 V standard signals Tool-free connection system with push-in-terminals Compact Design Compact with up to 56 i/o modules per station High concentration of up to 32 channels on a module that is only 22.5 mm wide System-integrated power bus Seamless integration in SIMATIC PCS new PROFINET IO communication standard Functions Main functions Compact I/O modules Up to 32 channels on a module that is 22.5 mm wide Up to 56 modules per station Perfectly suited for applications in the field Installation up to hazardous zone 2 Extended temp
Post a Comment

Memory Concept In S7-400 PLC

-

Memory Concept In S7-400 PLC


There are basically three types of memory:

1.       Load Memory

2.       Work Memory

3.       System Memory

 

Load Memory:

It is divided into two parts:

1.    Internal Load Memory: Load Memory of the PLC.

2.   External Load Memory: Load Memory provided by the Memory Card.

a.       RAM Card:

      It requires battery backup to store the data. If we plug out, then memory get reset. Battery backup is provided by Power supply with batteries inserted before CPU.

     Generally where we requires programming changes in PLC run mode, we use this type of memory card.

b.      FLASH CARD:

      It can be used for fail-safe backup of the user program and data without as         backup battery.

   Program can only be downloaded in PLC in stop mode with function--->  download user program to memory card or Through PG with card inserted in the slot.

 

Work Memory:

It is basically the memory of CPU. Always check the work memory of PLC with respect your program as it cannot be extended. It is generally including all the user program relevant to execution. Local data stacks and data blocks relevant to program execution. Process images, communication resources and diagnostic buffer.

 

System Memory:

It is the memory mainly for timers, bit memory and counters. Reserved temporary memories for local data stacks, diagnostic buffer and communication resources. It is reorganized when settings change in CPU properties.


Comments

Post a Comment

Popular posts from this blog

Project Migration in TIA from Older version to TIA V17

-
Image
  TIA Project Migration Project will be automatically migrated to TIA V17, if it is prepared in TIA V13 SP1 or higher. The option packages needed for the project must be installed on your system in current version. TIA project with version less then TIA V13 SP1 is to be firstly compiled in TIA V13 SP1 and then can be opened in higher version. Compile can be done as below: Compile -------> Hardware rebuild all Compile-------> Software rebuild all In case of opening lower version project in TIA V17, you may get below error "upgrade project (0025:000219) TIA V14 and higher no longer support S7-1200 CPU with firmware V1.0 In case if we have to work then we have to configure CPU with firmware 4.0 offline or while opening project of S7-1200 CPU with firmware V1.0 below error will occur.
Read more

S7-1500 Memory Concepts

-
Image
  Below is the memory area overview:  Load Memory Non volatile memory for User program, data blocks, technical object, recipe and data logs. We can copy additional data to load memory through a web server or explorer. An inserted Memory card is required for operating the CPU. For CPU 1518, extra load memory is required for : Linux runtime which runs in parallel with CPU runtime C/C++ runtime application CPU function libraries. Linux runtime is the environment required for execution of a runtime application and CPU runtime is required for applications requiring CPU runtime application. Work Memory Work memory contains executable code and data blocks. It is integrated in the CPU and cannot be extended. For CPU 1528-4PN/DP additional work memory is required for CPU function libraries and C/C++ runtime applications. Retentive Memory It is a non volatile memory for saving limited amount of data in case of power failure. It can be deleted with memory reset or reset to factory setting. Additi
Read more

Firmware Update of S7-1500 CPU/interface module, display and I/O modules.

-
Image
Update the firmware of the CPU/interface module, display and the I/O modules using firmware files. The retentive data is retained after the execution of the firmware update.  Options for Firmware Update Online in Step7 via Online and Diagnostics Online in Step7 via accessible devices (Profinet) Via Simatic memory card. Via integrated web server Online via the Simatic automation tool. Step 7 via Online and Diagnostics Open "Online and Diagnostic" option . Select Firmware update option under "Function". For CPU you can select display or CPU. screenshot as below: Click the "Browse" button to select the firmware update files in the "Firmware update"  area. Select the matching firmware file. The table in the firmware update area lists all modules  for which an update is possible with the selected firmware file.  Click the "Run update" button. If the module can interpret the selected file, the file is  downloaded to the module. If you must ch
Read more