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Now do a project, the customer asks for the program and quotation, with 315-2DP with ET200M., to facilitate future expansion. A total of twelve SM. interface modules with IM153-2. I found that active rails can be installed with up to 5 active bus templates. Then I have to expand the rack, so how to connect the signal modules of different racks in ET200M!
A: Actually, your solution is very simple. ET200M is an intelligent module. Communication between S7-315-2DP and intelligent module ET200M can be realized through PROFIBUSDP field bus. 315-2DP is used as PROFIBUSDP master station and remote ET200M is used as slave station. Communication with these modules is established via the PROFIBUS fieldbus. The following is a brief description of how to configure the 315-2DP and ET200M:
In the SIMATIC Manager, create your project, open the hardware configuration interface, click SIAMTIC300 on the right, expand RACK-300, double-click "Rail" to insert the rail, insert the specific 315-2DP in slot 2 (model, solid state Version), create a new PROFIBUS (1) network, set the master station address to "2", insert other signal modules as required, configure 315-2DP to complete; select the ET200M under the "Catalog" PROFIBUSDP on the right, and double-click IM153 -2 (select according to your specific interface module model), configure the ET200M slave hardware, set the slave address (the first one is "3"), and insert the signal module (SM) in sequence under the interface module 153-2: Select the ET20M interface module IM153-2 that has been configured in the PROFIBUS (1) network and expand the signal module (SM) under the interface module on the right. The ET200M module is the same as the standard S7-300 CPU module. The rack is inserted into the SM and the S7-300 CPU in the same way. Under the ET200M interface module, the first slot is the power module (optional, you can not insert), the second It is inserted into a specific interface module (such as 6ES7153-2AA00-0XE0), the third slot is empty, and 8 signal modules can be inserted from slots 4-11.
The hardware configuration of the bus module ET200M with source is the same as the conventional hardware configuration. The only difference is that if the ET200 with active bus module has a free slot in the hardware configuration (later reserved for future use), it must be Leave these slots in the idle state in STEP7.
An ET200M interface module can only have up to 8 SMs (signal modules). It is impossible to bring 12 SMs. If more than 8 SMs, it is very simple. You can insert one under the PROFIBUS (1) network established by 315-2DP. ET200M interface module (if the DP slave address is set to "4"), then insert the remaining 4 modules under the lower frame of the interface module.
PROFIBUS network wiring is relatively simple, you only need to use PROFIBUS network cable and DP network connector to connect the 315-2DP X2 port (DP port) and each ET200M interface module IM153-2 through the DP network connector, on the interface The setting of the toggle switch on the module IM153-2 is the same as the DP address set in the above hardware configuration, and note that the end resistor (red small switch) on the DP network connector on the end ET200M is set to the "ON" position, the middle ET200M The interface module is set to the "OFF" position. According to your solution, you do not need to expand the rack. You only need to select two ET200M intelligent modules. As the two DP slaves under the PROFIBUS (1) network established by the 315-2DP, you can In one step, the PROFIBUS (1) network established by the 315-2DP can hang 31 DP slaves, which fully meets your expansion requirements.