The devices of the NETLink® family serve the purpose of programming, configuring, and visualizing S7 PLCs.

NETLink® PRO Compact, PROFIBUS Ethernet gateway

NETLink® PRO Compact, PROFIBUS-Ethernet-Gateway
NETLink® PRO Compact, PROFIBUS-Ethernet-Gateway

In general, connection to each MPI/PROFIBUS terminal of the bus system or directly at the interfaces of active and passive participants is also possible. The PG socket integrated in the connector housing allows connection of additional devices.
The integrated web interface offers parameterization, diagnostic, and security features, and for functional enhancements, the user can use our free diagnostic software SHTools to, for example, automatically perform firmware updates. The latest version is available for download.

The NETLink® PRO Compact is a communications processor in the plug format for programming, visualization, and remote maintenance. It combines flexibility and a compact design. Power is supplied to the NETL ink® either through the CPU of the automation device or externally with DC 24 V as an option. The network connection can be used with any standard Cat-5 cable, making cable lengths up to 100 meters feasible without additional components.

  • RFC 1006 (ISO on TCP)
  • CPU-to-CPU communication (with S7-300* and S7-400*)
  • Support for all common S7 engineering tools
  • Dynamic address assignment using DHCP
  • Security functions for securing TCP/IP access
  • Switchable PLC write protection
  • Up to 16 TCP connections
  • Up to 32 MPI/PROFIBUS connections
  • Easy configuration via web interface
  • Variables can be monitored in a browser window
  • Support for slave configuration
  • Electrical isolation for MPI/PPI/PROFIBUS
  • MPI/PPI/PROFIBUS from 9.6 kbps to 12 Mbps
  • For S7-200*, S7-300*, S7-400*
  • Power can be supplied by the CPU or, alternatively, by an external DC 24 V supply

Download PDF datasheet
General information
Order number 700-884-MPI21
Article name NETLink® PRO Compact
Scope of delivery NETLink® PRO Compact, 3m Ethernet cable, Quick Start Guide, CD with software, and manual
Dimensions (DxWxH) 64 x 40 x 17 mm
Weight Approx. 110 g
Communication interface
Number 1
Type 10 Base-T
100 Base-TX
Transmission rate 10/100 Mbps autom. detection
Physical layer Ethernet
Protocol FDL, RFC 1006
Connection RJ45
Number 1
Type RS485, isolated
Transmission rate max. 12 Mbps autom. detection
Connection SUB-D male connector, 9-pin. with PG interface and repeater
Status indicator 5 LEDs, 2 of them bi-color
Voltage supply 24 V DC, 18–30 V DC
Current draw Max. 200 mA with DC 24 V
Ambient conditions
Ambient temperature 0 °C ... +60°C
Transport and storage temperature -20 °C … +80 °C
Relative air humidity 95 % r H without condensation
Pollution degree 2
Protection rating IP20
Certifications CE
RoHS Yes


 Name Version Size Tags
NETLink Ethernet Products, Firmware-History 8 KB
SHTools, for Windows 7/8/10 32/64 Bit 3.89 FW3 6 MB History


 Name Version Size Tags
NETLink-S7-NET Driver, for Windows 7/8/10 32/64 Bit 11 MB History

* S7-200, S7-300, and S7-400 are registered trademarks of Siemens AG.