S7-300 Siemens PLC

Siemens PLCS7-300 Siemens PLC

System Composition
**Processing unit(CPU): VariousCPUThere are different performances, for example, someCPUIntegrated withPROFIBUS—DPCommunication interfaces, etc.
signal module(SM)Used for digital and analog input/output.
communication processor(CP)Used for connecting networks and point-to-point connections.
functional module(FM)Used for high-speed counting and positioning operations(Open loop or closed-loop positioning)And closed-loop control.
Load power module(PS): Used toSIMATICS7—300connect to120／230VAC power supply, or24／48／60／110VDC power supply.
interface module(1M): Used for connecting main racks in multi rack configurations(CR)And expansion rack(ER).S7—300Through a distributed host rack(CR)and3An expansion rack(ER), can operate up to32A module. No fan is required during operation.
SIMATICS7—300Suitable for general fields: high electromagnetic compatibility and strong resistance to vibration and impact, making it adaptable to industrial environments.
function
SIMATICS7—300A large number of features can support and assist users in programming, startup, and maintenance, with the following main functions:
High speed instruction processing:0．1—0．6u sThe instruction processing time has opened up new application areas within the range of medium to low performance requirements.
Floating point operations: This function can effectively achieve more complex arithmetic operations.
Convenient parameter assignment for users: A software tool with a standard user interface assigns parameters to all modules.
human-machine interface(HMl)Convenient human-machine interface services have been integrated intoS7—300The programming requirements for human-machine dialogue within the operating system are greatly reduced.
SIMATIChuman-machine interface(HMl)fromS7—300Obtaining data,S7-300Transfer these data at the refresh rate specified by the user.S7-300The operating system automatically processes the transmission of data.
Diagnostic function:CPUThe intelligent diagnostic system continuously monitors whether the system's functions are normal, records errors, and special system events(For example: timeout, module replacement, etc).
Password protection: Multi level password protection enables users to highly and effectively protect their technical secrets, preventing unauthorized copying and modification. Operation mode selection switch: The operation mode selection switch can be pulled out like a key,