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Yokogawa ALR111 Serial Communication Module Overview
The Yokogawa ALR111 is a serial communication module designed for Field Control Stations (FCS), enabling RS-232C communication with subsystems such as PLCs, controllers, and other equipment. It supports half-duplex, start-stop synchronization, and integrates seamlessly with Yokogawa control systems for reliable data exchange.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | ALR111 Serial Communication Module |
| Communication Interface | RS-232C |
| Communication Function | Half-duplex, start-stop synchronization |
| Transmission Speed | 1200/2400/4800/9600/19200/38400 bps |
| Transmission Code | ASCII/Binary |
| Character Length | 7/8 bits |
| Stop Bit | 1/2 bits |
| Parity | None/Even/Odd |
| Transmission Distance | Max. 15 m |
| Connection Ports | D-sub-9-pin female x 2 |
| Current Consumption | 0.5 A |
| Installation | Mounted on ANB10, ANB11, ANR10, AFF50, AFV10, AFV30, AFV40 |
| Dimensions (W×D×H) | 126.7 × 32.8 × 130 mm |
| Weight | 0.3 kg |
Applications
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Serial communication with PLCs, such as Modicon, MELSEC-A, and SLC500.
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Integration with Yokogawa FA-M3 and FA500 systems.
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Data acquisition and command transmission to various subsystems over RS-232C.
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Suitable for process automation requiring stable and configurable serial communication.
Advantages
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Supports a wide range of transmission speeds and protocols.
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Compact and lightweight for easy installation.
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Dual-redundant configuration capability enhances system reliability.
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Seamless integration with Yokogawa’s FCS and builder software.
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Flexible wiring options and configuration through builder functions.
Frequently Asked Questions
Q1: What communication interface does the ALR111 use?
A1: It uses the RS-232C serial interface.
Q2: What are the supported transmission speeds?
A2: Supported speeds are 1200, 2400, 4800, 9600, 19200, and 38400 bps.
Q3: Is the ALR111 suitable for redundant systems?
A3: Yes, it can be configured in a dual-redundant setup.
Q4: What is the maximum transmission distance?
A4: The maximum cable length is 15 meters for RS-232C.
Q5: Which subsystems can it communicate with?
A5: FA-M3, FA500, Modbus-compatible devices, MELSEC-A, SLC500, and PLC-5.
Q6: How many ports are provided?
A6: The module provides two RS-232C ports.
Q7: What is its power consumption?
A7: It consumes approximately 0.5 A of current.
Q8: What type of installation slots are supported?
A8: It is mounted on compatible Yokogawa units like ANB10, ANB11, ANR10, AFF50, AFV10, AFV30, and AFV40.
Q9: Does it support ASCII and binary transmission?
A9: Yes, both ASCII and binary modes are supported.
Q10: What is the size and weight of the ALR111?
A10: Dimensions are 126.7 × 32.8 × 130 mm and weight is 0.3 kg.
Recommended Related Models
| Model | Communication | Interface | Dimensions (mm) | Weight |
|---|---|---|---|---|
| ALR121 | Serial Comm. | RS-422/485 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALE111 | Ethernet | 10BASE-T | 126.7 × 32.8 × 130 | 0.3 kg |
| ALF111 | Foundation Fld. | H1 | 126.7 × 32.8 × 130 | 0.3 kg |
| ALP111 | Profibus-DP | DP | 126.7 × 32.8 × 130 | 0.3 kg |
| AGS813 | Gateway | Various Protocols | 126.7 × 32.8 × 130 | 0.3 kg |
| AGP813 | Gateway | Various Protocols | 126.7 × 32.8 × 130 | 0.3 kg |
Popular Yokogawa Models
| Model | Description | Interface / Function | Dimensions (mm) | Weight |
|---|---|---|---|---|
| PW101 | Power Module | Power Supply | 126.7 × 32.8 × 130 | 0.3 kg |
| PW402 | Power Module | Redundant Power | 126.7 × 32.8 × 130 | 0.3 kg |
| AAI141 | Analog Input Module | 4-20 mA Input | 126.7 × 32.8 × 130 | 0.3 kg |
| AAI543 | Analog Output Module | 4-20 mA Output | 126.7 × 32.8 × 130 | 0.3 kg |
| ADV551 | Digital Output Module | 24VDC Output | 126.7 × 32.8 × 130 | 0.3 kg |
| AAI841 | HART Analog Input Module | 4-20 mA + HART | 126.7 × 32.8 × 130 | 0.3 kg |
