YOKOGAWA ALR121-S51 High performance serial communication module

YOKOGAWA ALR121-S51 High performance serial communication module

Specific Parameters

Device Type Serial Communication Module

Product Series ALR121 Series

Communication Interface RS-422/RS-485 (4-wire system)

Communication Mode Half-duplex

Connection Method Point-to-point (RS-422), Multi-point (RS-485)

Communication Rate 1200/2400/4800/9600/19200/38400/115200bps

Transmission Code ASCII/Binary

Character Length 7/8 bits

Stop Bit Length 1/2 bits

Parity Check None/Even/Odd

Lag Time After Data Transmission 1ms

Maximum Transmission Distance 1200m (Total Extended Length)

I/O Data Capacity 1000 Words

Number of Communication Definitions 128

Adaptive Equipment AFV30, AFV40, A2FV50, A2FV70 series field control units, ANB10, ANB11 series bus node units

Current Consumption 0.5A

Weight 0.34kg

Operating Temperature Range -20℃ to 70℃

Storage Temperature Range -40℃ to 85℃

Certification Standards CE, UL, ISA Standards

Product Performance

Communication Performance: Supports RS-422/RS-485 dual interfaces and half-duplex communication mode. The communication rate can be flexibly adjusted, the lag time after data transmission is only 1ms, which can realize high-speed and stable data sending and receiving, and the maximum transmission distance can reach 1200m, meeting the needs of long-distance communication.

Compatibility Performance: Specifically designed for Yokogawa Field Control Stations (FCS), it can be directly installed on designated series of field control units and bus node units, supports 128 communication definitions and 1000-word I/O data capacity, and can be seamlessly integrated with FA-M3, Modbus and other subsystems and third-party equipment without additional adaptation and transformation.

Anti-interference Performance: Adopting shielding design, it can effectively resist electromagnetic interference in industrial sites, reduce communication bit error rate, ensure the integrity and stability of data transmission in complex industrial environments, and adapt to various harsh industrial scenarios.

Structural Performance: Adopting modular compact design, it is light in weight and easy to install, can flexibly adapt to the installation space of industrial sites, supports standard installation methods, has low maintenance cost, and is convenient for equipment replacement and system expansion.

Stability Performance: It has a wide operating temperature adaptation range, can operate stably for a long time in the environment of -20℃ to 70℃, has reliable physical performance, long trouble-free operation time, and meets the continuous operation needs of industrial control systems.