Yokogawa ALR111-S00 CENTUM Series Communication

The Yokogawa ALR111-S00, also cataloged as the ALR111 Serial Communication Module, operates as a dedicated hardware component for point-to-point RS-232C subsystem integration and data conversion within distributed control system (DCS) platforms.

Suffix Breakdown & Model Matrix

The ALR111 series utilizes explicit engineering suffixes to define hardware builds and communication interface variants. Below is the technical breakdown for the ALR111-S00 configuration:

• ALR111: Core base model designator for the RS-232C serial communication module.
• -S: Standard type construction baseline for standard industrial enclosure installation.
• 0: Phase indicator slot mapping designator.
• 0: Basic functionality block revision baseline.

Hardware Specifications

Process Control System Specifications

• 4-20 mA HART Loop Protocol Network Arbitration While executing dedicated serial transactions over the RS-232C physical line, the module bridges peripheral instruments directly into the Field Control Unit (FCU) architecture. It maps subsystem data variables into internal register structures, allowing digital subsystem updates to coordinate alongside central 4-20 mA regulatory control loops.
• Deterministic Processor Offloading and Channel Isolation The internal processor manages the asynchronous serial protocol stack independently of the main controller. This design handles high-frequency data framing and the 1 ms turnaround lag internally, preventing subsystem polling routines from introducing execution latency or cycle jitter into the core DCS processor.