Siemens SIMATIC DP RS485 Repeater

Technical Overview

RS485 repeater for PROFIBUS/MPI bus systems, supporting up to 31 nodes and 12 Mbit/s. Features IP20 protection, 24V DC operation, and -40 to 70°C storage.

Key Features

Connects PROFIBUS/MPI bus systems.
Supports a maximum of 31 nodes.
Maximum baud rate of 12 Mbit/s, configurable from 9.6 kbit/s.
Degree of protection IP20.
Features improved user handling.
Supports isochronous mode.
Automatic detection of transmission rate.
Electrical connection for supply voltage via terminal module.
Electrical connection for PROFIBUS cables via 2 terminal blocks.

Technical Specification Matrix

Parameter	Value
Supply Voltage (Rated)	24 V DC
Permissible Supply Voltage Range (DC)	20.4 V to 28.8 V
Current Consumption (max, without loads)	100 mA
Current Consumption (max, with 5V/90mA load)	130 mA
Current Consumption (max, with 24V/100mA load)	200 mA
Power Loss (typical)	0.7 W
Transmission Rate	9.6 kbit/s to 12 Mbit/s
IP Degree of Protection	IP20
Ambient Temperature (Operation)	0 °C to 60 °C
Ambient Temperature (Storage/Transportation)	-40 °C to 70 °C
Relative Humidity (Operation)	max. 95 % at 25 °C
Max Nodes Supported	31 nodes
Physical Weight (kg)	0.244
Dimensions L x W x H (cm)	13.4 x 7.4 x 6.5

Industrial Applications

1. PROFIBUS DP Network Extension in Manufacturing Plants

Extending the physical reach and increasing the number of connected devices in an existing PROFIBUS DP network within a manufacturing facility or production line. The repeater regenerates the signal to overcome cable length limitations and supports up to 31 nodes, ensuring reliable communication in large-scale automation systems.

Problem Solved

Prevents signal degradation and communication errors in PROFIBUS DP networks that exceed standard segment lengths or node counts, maintaining high data integrity across wider operational areas.

PROFIBUS DPNetwork ExtensionSignal AmplificationNode Capacity12 Mbit/s24 V DC

2. Integrating MPI Networks in Climate-Controlled Control Rooms

Facilitating communication and data exchange between multiple SIMATIC S7 PLCs on separate MPI network segments in environments like climate-controlled control rooms or data centers. The 0-60 °C operating temperature and IP20 rating are suitable for such controlled indoor conditions.

Problem Solved

Enables seamless integration and expanded communication capabilities between different MPI networks and their associated PLCs, enhancing system-wide control and monitoring without requiring more ruggedized equipment than necessary for the environment.

MPI Network IntegrationSIMATIC S7 PLCData Exchange0-60 °C Operating TemperatureIP20

3. High-Speed Data Transmission in Industrial Control Cabinets

Used within industrial control cabinets to ensure robust, high-speed (up to 12 Mbit/s) PROFIBUS data transmission over extended distances between automation components, where the ambient conditions are within 0-60°C and an IP20 protection is adequate for the enclosed environment.

Problem Solved

Maintains signal integrity and high baud rates for critical PROFIBUS DP communications over longer cable runs, preventing data loss and ensuring consistent, real-time control of distributed machinery and processes within a factory setting.

PROFIBUS DPHigh-Speed CommunicationSignal Integrity12 Mbit/s Baud RateControl CabinetIP2024 V DC