ALE111-S51 Yokogawa Ethernet Communication Module

Hardware Specifications

Ethernet Communication and DCS Network Interface

The Yokogawa ALE111-S51 provides Ethernet communication functions for CENTUM VP control system architectures. Moreover, the module transfers digital data through an RJ-45 interface using a 10 Mbps half-duplex transmission method.

The module uses CSMA/CD media access control for Ethernet network operation. In addition, it supports point-to-point communication through 100 ohm twisted-pair cables with a maximum transmission distance of 100 m per segment.

For Yokogawa process control systems, Ethernet communication modules must maintain stable protocol exchange and proper network configuration. Therefore, engineers should verify cable specifications, network topology, and communication parameters before system integration.

Frequently Asked Questions

Q: What Ethernet interface does the Yokogawa ALE111-S51 use?
A: The ALE111-S51 uses an RJ-45 connector for Ethernet communication connections.

Q: What transmission speed does the ALE111-S51 support?
A: The module supports a 10 Mbps Ethernet transmission speed with half-duplex communication.

Q: What cable type is specified for the ALE111-S51 Ethernet connection?
A: The module uses 100 ohm twisted-pair cable for Ethernet transmission.

Field Installation Guidelines

Install the ALE111-S51 according to Yokogawa system hardware manuals and approved cabinet wiring practices.

Ensure the Ethernet cable routing separates communication lines from high-voltage power cables and strong electromagnetic interference sources. Furthermore, verify that the RJ-45 connector remains properly seated during installation.

Use suitable cable grounding and shielding methods according to the plant network design. Before commissioning, check Ethernet link status, communication parameters, and connection integrity between the module and connected devices.