1. Product Overview

• Part Number: 5105‑103M‑PDPS

• Manufacturer: ProSoft Technology (ProLinx 5000 Series)

• Product Type: DIN‑rail mounted protocol gateway

• Function: Converts Modbus RTU Master (serial) to PROFIBUS DP Slave; enables bidirectional data exchange between Modbus RTU devices and any PROFIBUS DP master (e.g., Siemens PLC).

• Protocols:

  • Serial: Modbus RTU Master

  • Fieldbus: PROFIBUS DP Slave (PDPS)

2. Key Features

1. Modbus RTU Master (RS‑232/422/485 configurable)

2. PROFIBUS DP Slave interface (DB9 female)

3. Supports Modbus function codes 01, 02, 03, 04, 05, 06, 15, 16

4. PROFIBUS node address: 0–125 (software configurable)

5. Baud rates:

   • Modbus: 1200–115.2 kbps

   • PROFIBUS: 9.6 kbps–12 Mbps

6. Data mapping: flexible I/O size, byte/word swapping

7. Communication fault mode: configurable (hold/freeze/zero)

8. Isolated serial and PROFIBUS ports

9. Industrial DIN‑rail mount, compact size

10. LED status indicators for power, run, serial, PROFIBUS, fault

11. GSD file included for PROFIBUS configuration tools

12. Wide temperature range for harsh environments

3. Technical Specifications

3.1 Power

• Voltage: 18–32 VDC (24 VDC nominal)

• Current: ≤500 mA @ 24 VDC

• Power consumption: ≤12 W

3.2 Modbus RTU Master (Serial Port)

• Interface: RS‑232 / RS‑422 / RS‑485 (software selectable)

• Data bits: 7 / 8

• Stop bits: 1 / 2

• Parity: None / Even / Odd

• Baud rate: 1200, 2400, 4800, 9600, 19.2k, 38.4k, 57.6k, 115.2k

• Modbus: RTU Master, up to 247 slaves

3.3 PROFIBUS DP Slave (PDPS)

• Protocol: PROFIBUS DP‑V0/V1 Slave

• Node address: 0–125 (software set)

• Connector: DB9 female (PROFIBUS standard)

• Baud rate: 9.6k, 19.2k, 93.75k, 187.5k, 500k, 1.5M, 3M, 6M, 12M

• Isolation: 2500 Vrms

• Process data size: up to 244 bytes IN / 244 bytes OUT

3.4 Environmental

• Operating temp: −20 °C to +60 °C

• Storage temp: −40 °C to +85 °C

• Humidity: 5–95% RH, non‑condensing

• Vibration: 5 g, 10–150 Hz

• Shock: 30 g (operational)

3.5 Physical

• Mounting: standard DIN rail

• Dimensions: approx 125 × 80 × 30 mm

• Weight: approx 0.45 kg

• Certifications: CE, UL/cUL, Class 1 Div 2

4. LED Indicators

• PWR: Power ON – steady = OK

• RUN: Module operating – flashing = running normally

• SER: Modbus serial – flashing = active communication

• PBUS: PROFIBUS DP – flashing = data exchange

• ERR: Fault – ON = configuration/communication error

5. Installation & Wiring

1. Mount gateway on DIN rail in cabinet.

2. Connect 24 VDC power (observe polarity).

3. Wire Modbus RTU to serial port (RS‑485 recommended for multi‑drop).

4. Connect PROFIBUS cable to DB9; ensure proper shielding and termination.

5. Set PROFIBUS address and communication parameters via configuration software.

6. Configure Modbus RTU Master commands (polling list, function codes, registers).

7. Download configuration to gateway; verify LED status.

6. Data Mapping

• Map Modbus register data to PROFIBUS input/output process data.

• Supports:

  • Coils (bits)

  • Discrete inputs

  • Input registers

  • Holding registers

• Byte/word swapping for big‑endian/little‑endian compatibility.

• Communication timeout and fault state configurable.

7. Typical Applications

• Connect Modbus RTU sensors, meters, drives to Siemens PROFIBUS PLCs

• Migrate legacy Modbus devices into PROFIBUS‑based DCS

• Factory automation, water treatment, energy management

• Retrofit projects mixing Modbus and PROFIBUS networks

8. Safety Notes

• Disconnect power before installation/wiring.

• Use shielded cables for both serial and PROFIBUS.

• Do not exceed voltage and temperature ratings.

• Terminate PROFIBUS network at both ends.

• Configuration must be performed by qualified personnel.