Siemens SIMATIC NET S7-300 Operating Instructions

4.3 Installation on a standard rail
Installation on a SIMATIC S7-300 standard rail
Note
The CSM 377 does not have a feedthrough for the backplane bus. It must therefore be mounted
either at the start or end of the station!
1. Place the upper guide at the top of the CSM housing in the S7 standard rail.
2. Screw the CSM 377 compact switch module to the underside of the standard rail.
3. Fit the connectors for the power supply. See << Link to Figure 4.3>>
4. Insert the terminal block into the sockets on the device. See << Link to Figure 4.2>>
Figure 4-1 CSM 377 installation on a SIMATIC S7-300 standard rail
Uninstalling
To remove a CSM 377 compact switch module from the SIMATIC S7-300 standard rail:
1. First disconnect all connected cables. See << Link to Figure 4.6>>
2. Loosen the device screws on the underside of the S7 standard rail and lift the device away
from the rail.
Installation
4.3 Installation on a standard rail
Compact Switch Module CSM 377
Operating Instructions, 06/2022, A2B00073499-02 25

Siemens SIMATIC NET S7-300 Specifications

General

Product Type Designation	SIMATIC NET S7-300
Mounting	DIN rail mounting
Protection Class	IP20
CPU Models	Various models available (e.g., CPU 312, CPU 314)
Communication Interfaces	MPI, PROFIBUS DP
Power Supply	24 V DC power supply required. Different power supply modules available.
I/O Modules	Digital input modules, digital output modules, analog input modules, analog output modules
Programming	STEP 7 software
Supply Voltage	24V DC or 120/230V AC (depending on model)
Digital Inputs	Available via digital input modules
Digital Outputs	Available via digital output modules
Analog Inputs	Available via analog input modules
Analog Outputs	Available via analog output modules
Communication Functions	MPI, PROFIBUS DP, Ethernet (depending on model)
Protocols	MPI, PROFIBUS DP, TCP/IP (depending on model)
Operating Temperature	0°C to 60°C
Storage Temperature	70 °C
Memory	Depends on CPU model (e.g., 32 KB to 1.5 MB)