PPDS-700-MTCP Modbus Gateway
The PPDS-700-MTCP series is a comprehensive line of programmable Modbus TCP device servers designed to connect multiple RS-232/RS-485 devices to Ethernet networks while running user-defined logic on board. Built on the ICP DAS MiniOS7 platform, these modules support Modbus TCP server/client modes, PoE power, and often include a 2-port Ethernet switch with LAN bypass for daisy-chain wiring.
Deployment Needs
- PPDS-720 / 721 / PPDSM-721-MTCP – compact single- and dual-port models with programmable logic, ideal for small device clusters.
- PPDS-732 / 734 / 742 / 743 – multi-serial-port versions (up to 4 RS-232/485 ports), allowing multiple Modbus RTU/ASCII networks to be bridged through a single Ethernet connection.
- PPDS-752 / 755 / 762 / 782 – high-density models offering up to 8 serial ports, perfect for centralizing large numbers of legacy devices in control cabinets or substations.
- PPDSM versions add extra isolation and ruggedness for environments with high EMI/RFI interference.
Common Features Across the Series
- PoE support for simplified cabling.
- Built-in Modbus TCP gateway mode (RTU ↔ TCP/UDP).
- Watchdog timers for fail-safe operation.
- LAN bypass to maintain network continuity even if the device is powered off.
- User-programmable firmware to implement edge logic, data filtering, or custom protocols.
These gateways are excellent for retrofit projects, industrial SCADA expansions, and IIoT edge deployments where space is limited but multiple serial devices must be integrated securely and efficiently.
Product Examples
PPDS-732-MTCP
Programmable Device Server, 2xRS-232, 1xRS-485, 4xDI/4xDO, Power over Ethernet, Modbus, RoHS.
PPDS-762-MTCP
Programmable Device Server with PoE, Modbus Gateway, 5 RS-232 ports and 1 RS-485 port.
Typical Applications
- Centralized data acquisition from multiple RS-232/485 devices (meters, PLCs, sensors) over Modbus TCP.
- Smart gateway nodes in substations, energy monitoring systems, and building automation.
- Edge computing where pre-processing or filtering of serial data is required before sending to SCADA/cloud.
- Redundant or critical networks where LAN bypass and watchdog are crucial for continuous operation.
PPDS-700 Series Programmable Device Servers
The PPDS-700-MTCP series modules support PoE (Power over Ethernet) and Modbus Gateway.
| Model | RS-232 | RS-485 | RS-422/485 | DI/DO | Ethernet |
|---|---|---|---|---|---|
| PPDS-720(D)-MTCP | 1 | 1 | – | – | 10/100 M |
| PPDS-721(D)-MTCP | 1 | 1 | – | 6/7 | 10/100 M |
| PPDS-732(D)-MTCP | 2 | 1 | – | 4/4 | 10/100 M |
| PPDS-734(D)-MTCP | 1 | 1 | 1 | 4/4 | 10/100 M |
| PPDS-742(D)-MTCP | 3 | 1 | – | – | 10/100 M |
| PPDS-743(D)-MTCP | 3 | 1 | – | 4/4 | 10/100 M |
| PPDS-752(D)-MTCP | 4 | 1 | – | – | 10/100 M |
| PPDS-755(D)-MTCP | 1 | 4 | – | – | 10/100 M |
| PPDS-762(D)-MTCP | 5 | 1 | – | 1/2 | 10/100 M |
| PPDS-782(D)-MTCP | 7 | 1 | – | – | 10/100 M |
tGW Modbus Gateway
The tGW Modbus Gateway series from ICP DAS consists of compact, dedicated protocol bridges that map Modbus TCP/UDP to Modbus RTU/ASCII over serial lines (RS-232/422/485). They are built to be field-deployable in tight installations where minimal hardware and wiring is preferred. The gateways support transparent pair-mode bridging, serial framing, watchdog mechanisms, and PoE or local power depending on the model.
Key Characteristics
- Simple and lightweight: Designed purely for Modbus mapping without additional programmable overhead.
- PoE option on many models allows powering and data over one cable.
- LAN bypass / 2-port switch on some models ensures network continuity in redundant systems.
- Support for multiple serial interfaces and port densities across variants.
- Robust industrial design: DIN-rail mount, watchdog, LED diagnostics, and isolation.
This series is perfect when you need a plug-and-play Modbus bridge with reliable performance and minimal configuration.
Product Examples
tGW-715
Tiny Modbus/TCP to RTU/ASCII gateway with PoE and 1 RS-422/485.
tGW-735i
Tiny Modbus/TCP to RTU/ASCII gateway with PoE and 3 Isolated RS-485.
Typical Applications
- Bridging one or more Modbus RTU devices into Modbus TCP networks.
- Plug-and-play conversion in control cabinets or remote enclosures.
- Minimal-footprint gateway solutions for single-loop systems.
- Use behind secure routers or within subnet boundaries needing simple Modbus mapping.
GW-2200 Modbus Gateway
The GW-2200 series from ICP DAS is a line of modular Modbus TCP ↔ Modbus RTU/ASCII gateways offering multiple serial ports and integrated Ethernet switch / LAN bypass capability. These devices are designed for situations where several RS-485 loops or mixed serial interfaces must be bridged to a single Ethernet connection, improving efficiency and simplifying wiring in control cabinets and industrial enclosures.
Typical Features Across the GW-2200 Series
- Support for multiple isolated RS-422/485 ports (from 2 to 5 or more), often configurable per model.
- Built-in 2-port Ethernet switch to permit daisy-chain or ring topologies.
- Modbus TCP server/client, with mapping between multiple serial loops.
- Watchdog, diagnostics, and industrial-grade design.
- DIN-rail mount and wide temperature support.
These gateways balance port density and network resiliency, ideal for factories, utility systems, or distributed machine control.
Product Examples
GW-2235i
Modbus/TCP to RTU/ASCII Gateway with 2-port Ethernet Switch and 3 Isolated RS-422/485 Ports.
GW-2215i
Modbus/TCP to RTU/ASCII Gateway with 2-port Ethernet Switch and 1 Isolated RS-422/485 Port.
Typical Applications
- Consolidating multiple RS-485 instrument loops into SCADA via a single gateway.
- Daisy-chained control cabinets where Ethernet redundancy is required.
- Retrofitting older installations by replacing multiple gateways with a single multi-port unit.
- Local distribution of serial lines in factories, utilities, or test benches.
GW-2200 Series (Modbus/TCP to RTU/ASCII Gateway with PoE and Terminal Block)
| Model (Isolated) | Ethernet | RS-232 | RS-422 | RS-485 | COM1 (Serial Type) | COM2 (Serial Type) | COM3 (Serial Type) |
|---|---|---|---|---|---|---|---|
| GW-2212i | 2-Port Switch, 10/100M | 1 | - | - | 5-wire RS-232 | - | - |
| GW-2222i | 2-Port Switch, 10/100M | 2 | - | - | 5-wire RS-232 | - | - |
| GW-2232i | 2-Port Switch, 10/100M | 3 | - | - | 5-wire RS232 | - | - |
| GW-2215i | 2-Port Switch, 10/100M | - | 1 | 2-wire RS-485 | 4-wire RS-422 | - | - |
| GW-2225i | 2-Port Switch, 10/100M | - | 2 | 2-wire RS-485 | 4-wire RS-422 | - | - |
| GW-2235i | 2-Port Switch, 10/100M | - | 3 | 2-wire RS-485 | 4-wire RS-422 | - | - |
uPAC-7186 / I-7188 Modbus Gateway
The uPAC-7186 / I-7188 series are programmable Modbus gateway/controllers built on MiniOS7, combining embedded logic with protocol bridging capabilities. These units can function as Modbus TCP ↔ RTU/ASCII gateways, or as general programmable PACs with Modbus as one of the supported interfaces.
Key Features
- A DOS-like environment (MiniOS7) allowing users to write custom logic in C-language, while the device concurrently handles Modbus gateway duties.
- Built-in Modbus TCP server/client firmware on certain variants (e.g. I-7188EX-MTCP) that map internal or external RTU data to Ethernet.
- Support for multiple serial ports (RS-232/RS-485) plus Ethernet, enabling bridging and on-the-fly protocol translation.
- Capability to host edge logic, data processing, alarms or filtering before passing data to SCADA or IIoT.
- Devices like uPAC-7186 have upgraded CPUs (80 MHz) and faster Ethernet (10/100 Mbps) compared to some earlier I-7188 models.
- The controllers support connecting multiple clients: e.g. up to 6 PCs can query over Ethernet (Modbus TCP) while the device simultaneously handles serial Modbus link(s).
These gateways excel in scenarios where you need both logic control and protocol bridging in one compact module—for example, in localized control panels, data preprocessing at the edge, or integrating a mix of serial devices into Ethernet/Modbus systems without extra PLCs.
Product Examples
I-7188E2-MTCP
Programmable controller module with 1x Ethernet port, 1x RS-232/RS-485 port, with default Modbus/TCP firmware, RoHS.
uPAC-7186EX-MTCP
PC-compatible 80 MHz MTCP Industrial Controller, 512kb Flash, 640kb SRAM, 2xRS232/485, Ethernet, MiniOS7, Modbus.
uPAC-7186E Series Programmable Modbus Gateway
The uPAC-7186E-MTCP is a new generation of palm-sized Programmable Modbus Gateways. It is equipped with a more powerful CPU (upgraded from 40 MHz to 80 MHz) and a faster Ethernet port (upgraded from 10 Base-T to 10/100 Base-TX). Compared with the I-7188E-MTCP series, uPAC-7186E’s computing speed is up to 4 times faster. There are also more memory configuration choices to select from.
| Model | CPU | SRAM | Flash | EEPROM | Ethernet Port | RS-232/RS-485 | I/O Expansion | 7 Segment Display | PoE |
|---|---|---|---|---|---|---|---|---|---|
| uPAC-7186EX-MTCP | 80186, 80 MHz | 512 KB | 512 KB | 16 KB | 1 | 2 | X-board (Note) | - | - |
| uPAC-7186EXD-MTCP | 80186, 80 MHz | 512 KB | 512 KB | 16 KB | 1 | 2 | X-board (Note) | Y | - |
| uPAC-7186PEX-MTCP | 80186, 80 MHz | 512 KB | 512 KB | 16 KB | 1 | 2 | X-board (Note) | - | Y |
| uPAC-7186PEXD-MTCP | 80186, 80 MHz | 512 KB | 512 KB | 16 KB | 1 | 2 | X-board (Note) | Y | Y |
I-7188E Series Programmable Modbus Gateway
The palm-sized PACs all share the same form factor and system architecture. With different firmware and communication interfaces, they can be a gateway to transmit data to another medium or translate to different protocols.
| Model | CPU | SRAM | Flash | EEPROM | SN | RTC | Ethernet Port | RS-232/RS-485 | I/O Expansion |
|---|---|---|---|---|---|---|---|---|---|
| I-7188EX-MTCP | 80188, 40 MHz | 512 KB | 512 KB | 2 KB | 64-bit Hardware serial number | Yes | 10 Base-T | 1/1 | X-board (Note) |
| I-7188EXD-MTCP | 80188, 40 MHz | 512 KB | 512 KB | 2 KB | 64-bit Hardware serial number | Yes | 10 Base-T | 1/1 | X-board (Note) |
| I-7188E2-MTCP | 80188, 40 MHz | 384 KB | 512 KB | 2 KB | 64-bit Hardware serial number | Yes | 10 Base-T | 1/1 | X-board (Note) |
| I-7188E2D-MTCP | 80188, 40 MHz | 384 KB | 512 KB | 2 KB | 64-bit Hardware serial number | Yes | 10 Base-T | 1/1 | X-board (Note) |
Fieldbus Gateway
ICP DAS Fieldbus Gateways are versatile protocol converters designed to connect Modbus-based systems with a wide range of industrial fieldbus and Ethernet-based networks. They allow communication between PLCs, SCADA, and devices that use protocols such as PROFIBUS, PROFINET, EtherNet/IP, EtherCAT, CANopen, DeviceNet, BACnet, M-Bus, HART, and J1939. By translating data in real time, these gateways enable interoperability across heterogeneous automation systems without requiring extensive programming.
Supported Protocol Families
- Lighting Control / Building Automation: Gateways that connect Modbus TCP/RTU networks to DALI or other lighting control systems for building automation.
- CANopen Gateways: Enable communication between CANopen devices and Modbus or other protocols, ideal for motion control and machine integration.
- DeviceNet Gateways: Convert Modbus data to DeviceNet master or slave mode, allowing integration of sensors, actuators, and drives on DeviceNet networks.
- PROFIBUS Gateways: Operate as PROFIBUS DP-V0/V1 slaves, bridging Modbus RTU/ASCII/TCP devices to PROFIBUS-based PLCs.
- EtherCAT Gateways: Provide EtherCAT slave interface for connecting Modbus devices to high-speed EtherCAT masters, perfect for synchronized control applications.
- PROFINET Gateways: Act as PROFINET I/O devices, exposing Modbus data to Siemens or other PROFINET controllers.
- EtherNet/IP Gateways: Translate Modbus data into EtherNet/IP objects for integration with Rockwell and Omron PLC systems.
- BACnet Gateways: Map Modbus data to BACnet/IP objects, enabling seamless integration into building automation systems.
- J1939 Gateways: Facilitate communication between Modbus devices and SAE J1939 networks, used in heavy vehicle and transportation telemetry.
- HART Gateways: Allow Modbus masters to read data from HART smart field instruments, simplifying asset management.
- M-Bus Gateways: Interface Modbus systems with M-Bus networks for utility metering and consumption data collection.
These gateways feature web-based configuration, support for multiple simultaneous masters/clients, diagnostic LEDs, and rugged DIN-rail housings. They are commonly deployed in process automation, energy monitoring, machine building, and building management systems where mixed-protocol networks need to work together seamlessly.
Product Examples
GW-7472
Modbus TCP/EtherNet/IP Gateway, 80186 CPU, 80 MHz.
GW-7552-B
PROFIBUS/Modbus Gateway, 80186 CPU, 80 MHz.
Typical Applications
- Bridging PROFIBUS or PROFINET PLCs with Modbus RTU/TCP sensors and controllers.
- Integrating EtherNet/IP or EtherCAT machine cells into existing Modbus infrastructure.
- Building automation projects using BACnet/IP and M-Bus energy meters.
- Remote monitoring of vehicles and assets through J1939 gateways.
- Process industries using HART field instruments with centralized Modbus SCADA.
GW-2500 Modbus Security Gateway
The GW-2500 series is a next-generation, security-hardened Modbus gateway designed for modern OT environments where cybersecurity is a requirement. These gateways support Modbus TCP, Modbus RTU/ASCII, and enhance connectivity with secure access, authentication, encryption, and network resilience.
Key Features & Advantages
- Modbus/TCP Security: Supports encrypted communication channels, ensuring that Modbus traffic is secure from eavesdropping or tampering.
- HTTPS Web Management: Secure, encrypted web interface for configuration and monitoring, protecting administrative access.
- SNMPv3 Support: Enables secure device monitoring and alerting with encrypted SNMP traffic.
- Fast Boot & Recovery: Optimized firmware ensures rapid startup, reducing downtime after power or network events.
- Read-Cache Mechanism: Local caching minimizes repeated queries, improving performance and reducing traffic on serial links.
- LAN Bypass / Dual Ethernet Ports: Built-in bypass function allows the main Ethernet link to remain operational even if the gateway loses power or fails, maintaining network continuity.
- User Access Control: Role-based user privileges and audit logging to meet compliance requirements.
- Industrial-Grade Hardware: DIN-rail housing, watchdog protection, and wide-temperature design suitable for challenging industrial environments.
These security-enhanced gateways are ideal where legacy Modbus devices must be exposed to IT or cloud networks under strict cybersecurity policies. They bridge old and new while enforcing modern security controls.
Product Examples
- GW-2515iM: Secure Modbus TCP/RTU gateway featuring HTTPS management, SNMPv3, LAN bypass, and Modbus/TCP Security.
- GW-2535iM: Standard variant offering Modbus bridging with security features, role-based access control, and network resilience.
Typical Applications
- Exposing legacy Modbus devices to enterprise networks or cloud while enforcing secure communication.
- OT segments in utilities, energy, and critical infrastructure requiring encryption and access control.
- Network zones where device failure must not break Ethernet continuity, thanks to bypass.
- Deployments requiring rapid booting and backup performance for field devices.
