ALE111-S50 Yokogawa Ethernet Module | FA-M3 and Modbus Connectivity

Yokogawa ALE111-S50 Ethernet Communication Module

The Yokogawa ALE111-S50 is an Ethernet communication module designed to connect supported Yokogawa control-system nodes with external devices and networks. It provides one 10BASE-T port using an RJ-45 connector and operates at 10 Mbps in half-duplex mode.

The module uses IEEE 802.3 physical-layer Ethernet and CSMA/CD media access control. Its specified link is point-to-point over 100-ohm unshielded twisted-pair cable, with a maximum segment length of 100 m.

1. Model Configuration — Suffix Breakdown

Code segment	Configuration	Engineering significance
ALE111	Ethernet communication module	Identifies the module family and communication function.
S	Standard type	Standard hardware configuration.
5	No explosion protection	Not specified for hazardous-area protection.
0	Basic type	Basic product configuration.

Complete model: ALE111-S50

2. Ethernet Interface and Link Limits

Parameter	Specification
Physical-layer standard	IEEE 802.3 10BASE-T
Port count	1
Connector	RJ-45
Connection method	Point-to-point
Transmission speed	10 Mbps
Duplex mode	Half-duplex
Media access control	CSMA/CD
Cable	100-ohm unshielded twisted pair
Maximum segment length	100 m
Current consumption	0.5 A
Weight	Approx. 0.3 kg

The stated 100 m limit applies to one segment between the specified endpoints, such as FCS and subsystem or hub and subsystem. Confirm the network topology and cable specification before installation.

3. Supported Installation Platforms

The ALE111-S50 is specified for installation on the following Yokogawa node or unit families:

• ANB10□ and ANB11□
• ANR10□
• AFF50□
• AFV10□, AFV30□, and AFV40□

The square symbol represents a model-family variation. Check the exact host-unit model, slot requirements, and system revision against Yokogawa documentation before ordering.

4. Communication Functions and Connected Systems

The published communication-function list includes connectivity with:

• FA-M3
• Modbus
• MELSEC
• YFGW
• DARWIN / DAQSTATION
• PLC-5 / SLC500

These names identify listed communication partners or function families. The supplied specifications do not state protocol variants, supported data areas, simultaneous connection limits, or configuration software requirements. Confirm those details for the intended application.

5. Application Fit

• Control-system integration: Linking supported Yokogawa nodes with external automation equipment.
• PLC data exchange: Connecting to listed PLC families when the required communication function is supported.
• Process data access: Providing an Ethernet interface for compatible supervisory or data-acquisition equipment.
• Legacy system maintenance: Replacing a matching module in an existing supported node, subject to hardware and software compatibility.

This module is a 10BASE-T interface, not a gigabit Ethernet port. Check the connected equipment’s ability to support the specified 10 Mbps half-duplex link.

6. Installation and Network Checks

1. Verify the host: Confirm that the installed ANB, ANR, AFF, or AFV unit is included in the supported list.
2. Check the cable: Use the specified 100-ohm unshielded twisted-pair medium and keep the segment within 100 m.
3. Confirm link settings: Ensure the connected device can communicate at 10 Mbps half-duplex.
4. Validate the communication function: Confirm the required protocol or device-family support and the correct system configuration.
5. Check power requirements: Allow for the stated 0.5 A current consumption when verifying the host’s power budget.

7. Diagnostic Guidance

The provided specifications do not identify onboard status LEDs, alarm codes, or built-in diagnostic routines. Troubleshooting should therefore begin with the network and system checks below.

• No link or communication: Inspect the RJ-45 connection, cable continuity, host installation, and connected-device interface.
• Intermittent data exchange: Check cable routing, segment length, connector condition, and network topology.
• Communication mismatch: Verify 10 Mbps half-duplex operation and confirm that the required communication function is configured at both ends.
• Unexpected system behavior: Confirm host-node compatibility and review the applicable Yokogawa system documentation for module status and configuration checks.

8. Global PLC Spare HUB Review

For replacement planning, the key constraints are the host-unit family, 10BASE-T link speed, half-duplex operation, and 100 m segment limit. A physically compatible RJ-45 connection does not by itself confirm protocol or system compatibility.

Before purchase, provide the complete ALE111-S50 code, host-unit model, connected device, and required communication function. This information helps distinguish a direct replacement from a project requiring additional configuration or network changes.

9. Supply and Warranty

• Product: Yokogawa ALE111-S50 Ethernet communication module
• Condition: New and original, in factory packaging
• Warranty: 12 months
• Shipping carriers: FedEx, UPS, or DHL
• Dispatch: Typically within 24–48 hours after order confirmation and stock verification

Contact Global PLC Spare HUB to confirm stock, delivery options, and compatibility with your installed system.

10. Frequently Asked Questions

Q1. Will the ALE111-S50 connect directly to a modern 100/1000 Mbps switch?

A. The module specifies 10BASE-T at 10 Mbps half-duplex. Confirm that the switch port supports 10 Mbps and can accommodate the required duplex mode; do not assume compatibility from the RJ-45 connector alone.

Q2. Is a shielded Ethernet cable required?

A. The supplied specification calls for 100-ohm unshielded twisted-pair cable. Follow the system installation manual and site EMC requirements when selecting and routing the cable.

Q3. Can the module communicate with every Modbus device?

A. Modbus is listed among its communication functions, but the provided data does not identify the supported Modbus variant or configuration limits. Verify the required protocol implementation and data mapping for the target device.

Q4. What information should be sent when requesting a replacement quote?

A. Provide the ALE111-S50 model, host-unit designation, system revision if known, connected equipment, and intended communication function. Include a photo of the existing module label when available.

Q5. What is the practical effect of the 100 m segment limit?

A. The specified link is limited to one segment of up to 100 m between the stated endpoints. If the route is longer, review the network design and approved intermediate equipment rather than extending the cable beyond its rating.

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