Siemens SIMATIC NET S7-300 Operating Instructions

3.4 TP ports
Connector pinout
On the CSM 377, the TP ports are implemented as RJ-45 sockets with MDI-X assignment
(Medium Dependent Interface–Autocrossover) of a network component.
Figure 3-2 RJ-45 jack
Table 3-1 Pin assignment of the RJ-45 jack
Pin number Assignment
Pin 8 n. c.
Pin 7 n. c.
Pin 6 TD-
Pin 5 n. c.
Pin 4 n. c.
Pin 3 TD+
Pin 2 RD-
Pin 1 RD+
Note
TP cords or TP-XP cords with a maximum length of 10 m can be connected to the RJ-45 TP port.
With the IE FC cables and IE FC RJ-45 plug 180, an overall cable length of up to 100 m is permitted
between two devices depending on the cable type.
Product properties
3.4 TP ports
Compact Switch Module CSM 377
14 Operating Instructions, 06/2022, A2B00073499-02

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)