The Ebyte PN1-S25 is an industrial-grade, 24x19mm SMD Profinet to Modbus RTU gateway module offering bidirectional translation, Class B conformance, and direct GSDML integration with Siemens PLCs, while its PN1-S25-TB development kit provides dual isolated RS485 ports and ±4kV EMC immunity for rapid deployment in -40°C to +85°C environments.
| Spec Category | Parameter Dimension | Specification Details (PN1-S25 & PN1-S25-TB) |
| Product Models | Base Module | PN1-S25 (24×19mm Compact SMD Module) |
| Development Kit | PN1-S25-TB (Includes Type-C power & Dual RS485 ports) | |
| Protocol Conversion | Translation Type | Bidirectional Profinet ⇄ Modbus RTU |
| Modbus Modes | Supports Modbus RTU Master / Slave modes | |
| Network Protocol | Profinet Conformance Class B (10/100M auto-negotiation) | |
| Performance Metrics | Serial Baud Rate | 1200 bps - 115200 bps |
| Modbus Capacity | Max. 64 Modbus commands | |
| Data Refresh Cycle | 100ms | |
| Hardware & Integration | PLC Compatibility | Plug-and-play with Siemens PLCs (S7-1200 / S7-1500 / ET200) |
| Configuration Method | Direct GSDML file integration via TIA Portal / STEP 7 | |
| Power Supply | 3.3V 150mA (PN1-S25 bare module) | |
| Industrial Reliability | Operating Temperature | -40°C to +85°C (Industrial Grade) |
| Signal Isolation | 2500Vrms RS485 isolation (PN1-S25-TB version) | |
| EMC Protection | Industrial EMC immunity: $\pm$ 4kV contact discharge | |
| Global Certifications | CE, FCC, RoHS compliant |
Practical Application Scenarios
Scenario 1: European Factory Automation & Siemens PLC Integration
-
Regional Industry Pain Points: Many manufacturing plants are upgrading their master control networks to high-speed Profinet but still rely on legacy Modbus RTU variable frequency drives (VFDs) and sensors on the factory floor. Replacing all legacy end-nodes is cost-prohibitive, and writing complex custom communication blocks within the Siemens environment is time-consuming for embedded engineers.
-
Ebyte Technical Solution: The PN1-S25 gateway seamlessly bridges this gap by providing bidirectional Profinet to Modbus RTU translation. By utilizing the provided GSDML file, automation engineers can directly integrate the gateway into the Siemens TIA Portal. It acts as a transparent bridge, allowing the new S7-1200 or S7-1500 PLCs to directly control and poll legacy Modbus motors and sensors without replacing the existing field equipment.
Scenario 2: Middle Eastern Water Treatment SCADA Systems
-
Regional Industry Pain Points: Water treatment plants operate in harsh industrial environments where high electromagnetic interference (EMI) from massive water pumps frequently corrupts serial data. SCADA systems require a deterministic, reliable connection to aggregate data from distributed water quality and flow sensors spread across the facility.
-
Ebyte Technical Solution: The PN1-S25-TB development board is engineered specifically for harsh environments. It features built-in 2500Vrms RS485 isolation and ±4kV contact discharge immunity, protecting the communication bus from transient voltage spikes. Operating flawlessly in temperatures ranging from -40°C to +85°C, it aggregates data from up to 64 Modbus commands from remote sensors and securely feeds it back to the central SCADA system over a high-speed 10/100M Ethernet Profinet backbone.
Scenario 3: Global Automated Packaging Machinery Systems
-
Regional Industry Pain Points: OEM equipment manufacturers designing modern packaging machinery face extreme space constraints inside conveyor control cabinets. They need to implement high-speed networking to synchronize multiple motor controllers, but standard DIN-rail gateway boxes take up too much physical space and increase the overall bill of materials (BOM) cost.
-
Ebyte Technical Solution: The PN1-S25 bare module features an ultra-compact 24x19mm SMD form factor. OEM hardware engineers can surface-mount this module directly onto their custom control PCBs. With its Profinet Conformance Class B rating and a rapid data refresh cycle of ≥100ms, it guarantees real-time, deterministic synchronization between the packaging line's local Modbus-driven actuators and the main factory PLC network.
FAQ Section
Q1: Does the PN1-S25 module require custom programming to communicate with Siemens PLCs?
A1: No custom protocol programming is required. The PN1-S25 is designed for plug-and-play industrial integration. It comes with standard GSDML files that you can directly import into Siemens TIA Portal or STEP 7, enabling immediate recognition and communication with S7-1200, S7-1500, and ET200 PLC series.
Q2: What is the main difference between the PN1-S25 and the PN1-S25-TB versions?
A2: The PN1-S25 is a 24x19mm compact SMD surface-mount module designed for OEM engineers to embed directly onto their custom PCBs, utilizing a 3.3V TTL interface. The PN1-S25-TB is a complete development and testing board that houses the bare module. It is equipped with a Type-C power interface and dual isolated RS485 ports, making it ideal for immediate field wiring, prototyping, and proof-of-concept testing.
Q3: How many Modbus RTU slave devices can this Profinet gateway manage simultaneously?
A3: The gateway supports both Modbus RTU Master and Slave modes. When configured as a Master, the module can execute up to 64 independent Modbus commands. It supports daisy-chained RS485 slave devices with configurable baud rates ranging from 1200 to 115200bps, maintaining a fast data refresh cycle of ≥100ms to ensure real-time data acquisition.
Q4: Is the hardware suitable for electrically noisy and high-temperature industrial environments?
A4: Yes, the entire hardware architecture is strictly industrial-grade. It supports a wide operating temperature range of -40 degrees Celsius to +85 degrees Celsius. Furthermore, it features ±4kV contact discharge EMC immunity, and the PN1-S25-TB version specifically adds 2500Vrms of RS485 isolation to protect against ground loops and electrical transients.
