Products Description
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Technical Specifications
| Item | Specification |
|---|---|
| Model | ALR121 Serial Communication Module |
| Interface | RS-422/RS-485 |
| Connection Method | Point-to-point (RS-422), Multipoint (RS-485) |
| Communication Function | Half-duplex |
| Synchronization Method | Start-stop synchronization |
| Transmission Speed | 1200/2400/4800/9600/19200/38400 bps |
| 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 | 1 ms |
| Transmission Distance | Maximum 1200 m (total extended length) |
| Installation Method | Mounted on ANB10, ANB11, ANR10, AFF50, AFV10, AFV30, AFV40 |
| I/O Wiring | AKB131, AKB132, AKB133, AKB134 cables, etc. |
| Wiring Connection | D-sub-9-pin (female x 2), Clamped with terminal block’s M4 screws (5 poles x 2) |
| Current Consumption | 0.5 A |
| Weight | 0.3 kg |
| Dimensions | 126.7 × 32.8 × 130 mm |
FAQ
FAQ
Q1: What communication interfaces does the Yokogawa ALR121 support?
A1: The ALR121 supports RS-422/RS-485 interfaces, allowing point-to-point (RS-422) and multipoint (RS-485) communication.
Q2: What is the maximum transmission speed supported by the ALR121 module?
A2: The maximum transmission speed is 38400 bps, although it may vary depending on the communication function, subsystems, and connection method.
Q3: Can I use the ALR121 module for dual-redundant communication?
A3: Yes, the ALR121 module supports dual-redundant communication when used with identical modules on separate communication ports.
Q4: What is the maximum transmission distance for the ALR121?
A4: The ALR121 supports a maximum transmission distance of 1200 meters (total extended length).
Q5: How many devices can the ALR121 module communicate with simultaneously?
A5: The ALR121 module can communicate with up to 30 stations per port.
Q6: What is the power consumption of the ALR121 module?
A6: The ALR121 module consumes 0.5 A of current.
Q7: What are the supported communication protocols for the ALR121 module?
A7: The ALR121 supports various communication protocols such as Modbus, FA-M3, MELSEC-A, and SLC500, among others.
Q8: What are the dimensions and weight of the ALR121 module?
A8: The ALR121 module has dimensions of 126.7 × 32.8 × 130 mm and weighs 0.3 kg.
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
