the difference is that you have with the ET200MP the same module format like the S7-1500. It's the same like ET200M - S7-300. The modules for the ET200M are more expensive. The safety or protection at the ET200MP is not higher/lower as the ET200SP.
What are the different interface modules in ET200SP?
Modules Description
------------- ------------------------------------------------------------------------------------------------------------------------------------------------------
IM155-6PN BA Basic module, max. 12 peripheral modules including server module with 2 integrated RJ45 sockets
IM 155-6PN HF High Feature module, max. 64 peripheral modules Multi Hot Swap, high quantity frameworks and very fast data transmission possible, incl. Server module
What is ET200 Siemens?
SIMATIC ET 200M is the modular I/O station for the control cabinet with high density-channel applications for SIMATIC S7-300SIMATIC S7-300The SIMATIC S7-300 universal Controllers saves on installation space and features a modular design. A wide range of modules can be used to expand the system centrally or to create decentralized structures according to the task at hand, and facilitates a cost-effective stock of spare parts.https://new.siemens.com › industrial › plc › simatic-s7-300SIMATIC S7-300 - Siemens. For sophisticated automation tasks in the process industries, the high-performance and high-availability I/O system SIMATIC ET 200 SP HA offers simple, flexible and scalable solutions.
What is ET 200 M?
SIMATIC ET 200M is the modular I/O station for the control cabinet with high density-channel applications for SIMATIC S7-300SIMATIC S7-300The SIMATIC S7-300 universal Controllers saves on installation space and features a modular design. A wide range of modules can be used to expand the system centrally or to create decentralized structures according to the task at hand, and facilitates a cost-effective stock of spare parts.https://new.siemens.com › industrial › plc › simatic-s7-300SIMATIC S7-300 - Siemens. The ET 200M system can be used for standard as well as failsafe applications. It offers a wide range of I/O modules in S7-300 design, including special process control functions.