ALE111-S50 2 ALE111-S50 4 ALE111-S50 3

The Yokogawa ALE111-S50 Ethernet Communication Module is a purpose-engineered network interface unit designed for robust, low-speed data exchange in distributed automation environments. Optimized for safety control station (SCS) and DCS connectivity, this module enables reliable subsystem communication via standard Ethernet protocols such as Modbus/TCP and DNP3. Its design supports industrial networking demands where deterministic communication and high availability are priorities.

Technical Specifications

Parameter	Specification
Model	ALE111-S50
Product Type	Ethernet Communication Module
Compatible Platforms	Yokogawa CENTUM VP, SCS architectures
Communication Protocols	Modbus/TCP, DNP3, Subsystem Communication
Ethernet Interface	IEEE 802.3 10BASE-T (half-duplex)
Transmission Speed	10 Mbps
Maximum Distance	100 m per segment
Ethernet Ports	1 × RJ-45
Power Consumption	~0.5 A @ 24 VDC
Mounting	Rack-mounted in safety/control racks
Operating Temperature	–40°C to +85°C
Storage Temperature	–40°C to +100°C
Relative Humidity	5 %–95 % RH (non-condensing)
Dimensions (L × W × H)	130 × 125.5 × 32.8 mm
Weight	0.30 kg

Recommended Related Models

Yokogawa ALE111 Standard Ethernet Module
Yokogawa ALE111-S00 Ethernet Interface
Yokogawa ALR121 Serial Communication Module
Yokogawa CP451 Processor Module
Yokogawa AIP502 Power Supply Module

Popular Yokogawa Networking & Control Components

Yokogawa AAI143 Analog Input Module
Yokogawa ADV151 Digital Input Module
Yokogawa AAI543 Analog Output Module
Yokogawa ADV551 Digital Output Module
Yokogawa EC401 Communication Interface

Typical Applications

The ALE111-S50 module is ideal for:

Ethernet-based subsystem communication within CENTUM VP networks
Connectivity between control stations and external masters (e.g., SCADA)
Safety control station (SCS) communication with field and automation subsystems
Dual-redundant network designs for high availability
Industrial automation environments in energy, petrochemical, and process industries

By supporting multiple protocols and flexible installation options, this module bridges classic automation with modern network-centric control needs.

Key Advantages

Multi-Protocol Industrial Communication
Supports Modbus/TCP and DNP3 slave modes along with subsystem communication flexibility.

Compact, Industrial-Ready Design
Lightweight form factor combined with a broad temperature range ensures reliable service in harsh environments.

Network Redundancy Support
Can be deployed in redundant pairs to help maintain connectivity during module or link faults.

Deterministic Data Transmission
Standard Ethernet communication with defined transmission distance and speed supports stable automation traffic.

Seamless Integration into Yokogawa Systems
Engineered to fit safety and control station racks used in CENTUM VP and related architectures.

Technical FAQs

1. What is the primary function of the ALE111-S50?
It provides an Ethernet communication interface for subsystem and safety station networking.

2. Which communication protocols are supported?
Supports Modbus/TCP, DNP3 slave modes, and subsystem communication.

3. How many Ethernet ports does it have?
It includes a single RJ-45 Ethernet port.

4. What is the typical transmission speed?
10 Mbps over 10BASE-T.

5. Can it operate at wide temperature ranges?
Yes, from –40°C up to +85°C.

6. Is it suitable for safety control station use?
Yes, it is designed for safety control and DCS environments.

7. Does it support network redundancy?
Yes, redundancy is supported via paired modules.

8. What type of cabling does it use?
Standard unshielded 100 ohm twisted-pair Ethernet cable.

9. Is external power required?
No – it uses system rack power rails.

10. What industries commonly use this module?
Process industries, energy, and safety-critical automation sectors where stable Ethernet connectivity is required.

Look forward to your comments!Comment