Please ask the experienced PLC experts for guidance, thank you
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I currently have a small project with a value of around 700 points. The client wants to use a Siemens 400 controller along with a 300 series card – how should I configure it? I would appreciate it if an expert could give me some advice (as I usually only use PKS and Triconex, and this is my first time working with PLCs)
A two-level structure is adopted, with the S7400 serving as the master controller and the S7300 connected via the PROFIBUS bus as the slave controller
There’s no problem with this, right? The 400 model supports input/output modules of the 300 type, and its CPU allows for redundant configuration; otherwise, there’s no difference! It has a big head and a small body, that’s all
He was referring to the Siemens 400 CPU connected via the Profibus interface, along with ET200M+300 IO modules
It is possible to arrange it in this way; for the specific configuration, just give the points to the distributor so that they can prepare a list for you. Siemens assigns an order number to each small accessory, and trying to figure it out on your own would likely require a lot of effort.
Thank you, it’s in this format.
It is recommended to use two CPUs of type 414-4H or 413-2H, along with several 300-series slave units, to form a 400H redundant system. For the master unit, the configuration involves a u2h chassis; from left to right, there are the power supply module, CPU module, and Ethernet module. As for the slave units, they consist of an active backplane; from left to right, there are two IM153-2 units along with various signal modules. Each CPU is connected to an IM153-2 unit in each slave unit via a DP bus. Synchronization between the CPUs is achieved using synchronization modules and optical fibers. It is advisable to refer to the documentation on Siemens’ 400H redundant system for more details!
The latest 400H model can also be connected via PN (Ethernet) to achieve redundancy with the ET200M. In fact, the 300 and 400 models are now nearing the end of their production cycle; there will be a ten-year period during which spare parts will still be available, but after that it’s uncertain. Therefore, it’s best to use the 1500 model for new projects
A 300 card slot can be attached below a 400 one