YOKOGAWA ALR121-S53 Serial Communication Modules Used With A SCS For Performing Modbus Communication
YOKOGAWA ALR121-S53 Serial Communication Modules Used With A SCS For Performing Modbus Communication
Product Details:
| Brand Name | YOKOGAWA |
| Model | ALR121-S53 |
| Condition | New |
| Gross Weight/Shipping Weight | 2.2 lbs / 35.2 oz / 1kg |
| Packing Size | 6.4" x 6.4" x 4.8" (16cm x 16 cm x 12 cm) |
| Country of Origin/Original Country | United States (USA) |
| Lead Time | In Stock |
| Shipping Port | Xiamen |
| Payment | T/T |
| Sales Price | Inquiry |
| Color | Depend on product |
| Warranty | 12 months |
| Lead time | 5-8 work days |
| Courier partners | DHL, UPS, TNT, FedEx and EMS |
Additional Information:
| Features | |
| Interface | RS-422/RS-485(4-wire system) |
| Connection method |
Point-to-point(RS-42) Multipoint(RS-485) |
| Communication function | Half-duplex |
| Synchronization method | Strat-stop synchronization |
| Transmission speed | 1200/2400/4800/9600/19200/38400 bps |
| Transmission code | binary |
| Character length | 8 bits(Fixed to 8 bit on the Modbus slave communication function and the subsystem communication function) |
| Parity check | None/even/odd |
| Lag time after data transmission | 1 ms |
| Transmission distance | Maximum 1200m(total extended length) |
| Installation method | Mounted on SSC60£, SSC50£, SSC57£, SSC10£, or SNB10D |
| 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 | Modbus slave communication function, subsystem communication function |
| Current consumption | 0.5 A |
Description:
By using the SCS’s Modbus slave communication function, the data in SCS can be set or referred to by the Modbus master which is as separate system from SCS via a serial communication module. Furthermore, the subsystem data such as from sequencers can be set or referred to via a serial communication module using SCS’s subsystem communication function.
The dual-redundant configuration of the network can be available by establishing an independent transmission path from the Modbus master for every two the serial communication modules mounted in the SCS. However, control/ stand-by switching function in between the dual-redundant serial communication modules mounted on adjacent slots is not supported.
The serial communication module communicates with subsystems at the specified intervals and stores the subsystem data in the communication modules’ I/O image. The subsystem communication function of SCS accesses the communication module asynchronously from them, and refers to or sets the I/O image.
The application logic of SCS reads data from the communication I/O data area when the communication input FB is executed, and writes the calculation data to the communication I/O data area when the communication output FB is executed.
Datasheet Link:
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