ALR111-S01 Yokogawa Serial Communication Module

Hardware Specifications

RS-232C Serial Communication Characteristics

The ALR111-S01 uses RS-232C communication hardware to transfer serial data between Yokogawa FIO field control equipment and connected subsystems. Moreover, the module applies start-stop synchronization and supports selectable parity, character length, and stop bit configurations for serial device compatibility.

The module supports ASCII and binary transmission formats. Therefore, it can process different subsystem communication protocols when configured according to the connected device requirements. The half-duplex communication mode controls transmission and reception through the same communication channel.

In Yokogawa DCS installations, the module follows FIO architecture requirements and supports mounting on AFV10, AFV30, AFV40, AFF50 field control units, ANB10 optical ESB bus node configurations, and ANR10 ER bus node units.

Furthermore, Yokogawa serial modules require correct shielded cable routing and grounding practices to maintain signal integrity in industrial environments. The communication interface operates independently from process measurement loops and performs dedicated serial data transfer functions.

Frequently Asked Questions

Q: Does the ALR111-S01 support RS-422 or RS-485 communication?
A: No. The ALR111-S01 provides an RS-232C interface. RS-422/RS-485 communication is available through the ALR121 model.

Q: What type of communication synchronization does the ALR111-S01 use?
A: The module uses start-stop synchronization for serial communication data transfer.

Q: Can the ALR111-S01 communicate through multiple devices?
A: The ALR111-S01 uses a point-to-point connection method. Multipoint communication applies to RS-485 configurations supported by ALR121.

Field Installation Guidelines

Install the ALR111-S01 on the specified Yokogawa FIO mounting units, including AFV10, AFV30, AFV40, AFF50, ANB10, and ANR10 platforms.

Use the recommended Yokogawa communication cables or equivalent shielded wiring suitable for RS-232C signal transmission. Route communication cables separately from high-voltage power wiring and high-frequency switching circuits to reduce electrical interference.

Connect the D-sub 9-pin female connectors according to the system wiring diagram. Ensure proper cable shielding and grounding practices before commissioning the communication channel.

Verify communication parameters, including baud rate, parity, character length, and stop bits, between the ALR111-S01 and the connected subsystem before data exchange testing.