Product Description
🔹 Product Overview
|
Category |
Details |
|---|---|
|
Manufacturer |
Yokogawa Electric Corporation |
|
Model/Part Number |
ALR121-S50 |
|
Description |
Serial Communication Module (RS-422/RS-485, 2 ports) for use in control systems requiring serial communication |
🔹 Hardware Specifications
|
Item |
Specifications |
|---|---|
|
Model |
ALR121 |
|
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 (*1) |
|
Transmission Code |
ASCII / Binary |
|
Character Length |
7 or 8 bits |
|
Stop Bit Length |
1 or 2 bits |
|
Parity Check |
None / Even / Odd |
|
Lag Time After Transmission |
1 ms (time to resume receiving data after sending) |
|
Transmission Distance |
Max. 1200 m (total extended length) |
|
Installation Method |
Mounted on ANB10, ANB11, ANR10, AFF50, AFV10, AFV30, or AFV40 |
|
I/O Wiring |
AKB131, AKB132, AKB133, AKB134; shielded 3-pair cable; AKB161, AKB162 |
|
Wiring Connection |
Terminal block (5 poles × 2), M4 screws |
|
Current Consumption |
0.5 A |
|
Weight |
Approx. 0.3 kg |
🔹 Model and Suffix Codes
|
Category |
Details |
|---|---|
|
Model |
ALR121 – Serial Communication Module |
|
Suffix Codes |
|
|
-S |
Standard type |
|
5 |
Without explosion protection |
|
E |
With explosion protection |
|
0 |
Basic type |
|
1 |
With ISA Standard G3 option |