Siemens 6GK1147-3MA00 Communications Processor

This Siemens communications processor enables data exchange between S5 controllers and industrial networks. The Siemens 6GK1147-3MA00 connects automation systems to PROFIBUS and other fieldbus networks. Its dedicated design offloads communication tasks from the main CPU. This module suits distributed control architectures and system integration applications.

Physical Dimensions and Mounting Specifications

The communications processor measures 232 mm in height and 25 mm in width. Its overall depth reaches 160 mm including the front connector. This unit weighs approximately 0.5 kilograms for stable rack installation. The housing supports standard 35 mm DIN rail mounting in S5 racks. The Siemens 6GK1147-3MA00 features a 20-pin front connector for all signal wiring. A 9-pin D-sub connector provides the network interface.

Network and Communication Specifications

This processor supports PROFIBUS DP with baud rates up to 1.5 Mbit/s. It handles up to 32 slave devices in a single network segment. The module manages 512 bytes of input and 512 bytes of output data. It supports both master and slave operating modes for flexibility. The Siemens 6GK1147-3MA00 includes integrated diagnostics for network monitoring. A built-in termination resistor ensures signal integrity at the cable end. LED indicators display network status and communication activity.

Electrical Characteristics and Memory

The unit draws a typical current of 200 mA from the 24 V DC supply. It includes a 470 µF capacitor for energy storage during brief interruptions. This capacitor maintains operation during momentary power dips. The Siemens 6GK1147-3MA00 provides 64 KB of RAM for communication buffers. An integrated EPROM stores the communication firmware. The module features galvanic isolation for the network interface.

Detailed Specification Table

Parameter	Specification
Dimensions (H x W x D)	232 mm x 25 mm x 160 mm
Weight	Approx. 0.5 kg
Network Protocol	PROFIBUS DP
Baud Rate	Up to 1.5 Mbit/s
Maximum Slaves	32
Input Data Capacity	512 bytes
Output Data Capacity	512 bytes
Operating Modes	Master/Slave
Supply Voltage	24 V DC
Current Consumption	200 mA (typical)
Energy Storage Capacitance	470 µF
RAM Capacity	64 KB
Network Interface	9-pin D-sub
Isolation	Galvanic (network)
Operating Temperature	0°C to 60°C

Application and Commissioning Guidelines

Mount this module in any available slot of the S5 rack system. Connect the network cable to the 9-pin D-sub connector securely. Set the station address using the DIP switches on the module. The Siemens 6GK1147-3MA00 operates effectively between 0°C and 60°C. Configure the communication parameters using the STEP 5 software. Select the appropriate baud rate for network compatibility. Terminate the bus at both ends for reliable signal transmission. Monitor the LEDs to verify network connectivity.