OverviewThe Hilscher NL 50-MPI is a directly mountable programming connector for S7-200/300/400 PLCs that enables programming, visualization and control over Ethernet. It integrates as a programming device (PG) driver into STEP7® and TIA Portal and can be configured via the engineering tool or the embedded web server. The adapter supports ISO on TCP (RFC1006) for coupling visualization systems and third-party devices, allows remote maintenance across routers using standard TCP/IP, and enables direct PLC-to-PLC communication even when a PLC lacks a native Ethernet port. PROFIBUS diagnostics and Master Class 2 DPV1 services support full DP slave configuration in STEP7®. Power is supplied via 24 V DC; the 1:1 connector contacts permit additional devices on the same MPI/DP bus.
Highlights- Direct connection to any free PROFIBUS/MPI/PPI port
- Cost-effective alternative to original S7 Ethernet CPs
- Automatic driver integration into STEP7® and TIA Portal
- Coupling of two PLCs without Ethernet interface
- Immediate connection of S7-compatible HMI devices via Ethernet
- Access for customer-developed applications (e.g. C++, C#)
Supported protocols- PROFIBUS MPI/DP/PPI
- Ethernet (ISO on TCP / RFC1006)
Technical specifications- Product name: NL 50-MPI
- Part number: 1701.430
- Brief description: S7-200/300/400 Ethernet programming connector
- Function: Monitoring, programming and visualizing S7 PLCs over Ethernet
- Communication controller type: netX 50
- RAM: 8 MB SDRAM
- FLASH: 4 MB serial flash (boot loader, firmware, configuration)
- Supply voltage: 24 V DC ±6 V DC
- Typical current: 57 mA @ 24 V (72 mA @ 18 V, 48 mA @ 30 V)
- Connector for PLC power/programming: 9-pin D-Sub (1:1 connection)
- Connector for external power: Mini-COMBICON 3.81 mm, 2-pin
- PROFIBUS interface: RS-485 (non-isolated HW rev.2/3; isolated from HW rev.4)
- Ethernet interface: 10BASE-T/100BASE-TX, isolated; RJ45; auto-negotiation and auto-crossover
- LED indicators: SYS, COM, LNK, ACT
- Operating temperature: 0 °C to +55 °C
- Humidity: 0–85 % RH (non-condensing)
- Dimensions (L x W x H): 74.3 x 40.6 x 16.7 mm
- Weight: approx. 40 g
- Protection class: IP20
- Mounting: Directly on PLC (DIN-rail mountable / attachable)
- Configuration software: SyCon MPI or IBHnet driver; integrates as PG in STEP7/TIA Portal
- Conformity: RoHS, CE; specified EMC/ESD immunity levels
Typical applications- Programming and commissioning of S7-200/300/400 controllers via Ethernet
- Projecting and connecting HMI devices (WinCC) to S7 systems
- Remote maintenance and logging across network boundaries
- Linking multiple PLCs for direct Ethernet communication
- PROFIBUS diagnostics and DP slave parameterization in STEP7®