Product Description
General Information
|
Manufacturer |
Yokogawa |
|---|---|
|
Model/Part Number |
ALR121-S51 S1 |
|
Description |
Serial Communication Module (RS-422/RS-485, 2 Ports) |
Hardware Specifications
|
Item |
ALR121 |
|---|---|
|
Interface |
RS-422/RS-485 (4-wire system) |
|
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 |
Binary |
|
Character Length |
8 Bits (Fixed to 8-bit on Modbus Slave Communication and Subsystem Communication) |
|
Stop Bit Length |
1/2 Bits (Fixed to 1-bit on Subsystem Communication) |
|
Parity Check |
None / Even / Odd |
|
Lag Time After Data Transmission |
1 ms |
|
Transmission Distance |
Maximum 1200 m (Total Extended Length) |
|
Installation Method |
Mounted on SSC60, SSC50, SSC57, SSC10, or SNB10D (*1) |
|
I/O Wiring |
Cable with 3-pair shield, AKB161, or AKB162 |
|
Wiring Connection |
Clamped with Terminal Block’s M4 Screws (5 poles × 2 ports) |
|
Communication Function (*2) |
Modbus Slave Communication, Subsystem Communication |
|
Current Consumption |
0.5 A |
|
Weight |
Approx. 0.34 kg |
Model Variations
|
Suffix Codes |
Description |
|---|---|
|
-S |
Standard Type |
|
5 |
No Explosion Protection |
|
E |
With Explosion Protection |
|
1 |
With ISA Standard G3 |
|
3 |
With ISA Standard G3 and Temperature Option |
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