RS-485 • Modbus • CAN • Ethernet

Industrial Communication
for Weighing Systems

Reliable protocol integration from the load cell to PLC, SCADA and business software — verified end-to-end on CASC and CURIOTEC platforms.

Devices & Protocols

KALA designs communication paths between CASC or CURIOTEC weighing equipment and PLCs, computers, remote displays, printers, SCADA platforms and business software. The correct protocol depends on distance, noise environment, update rate, device count and existing infrastructure.

Protocol Selection Guide

ProtocolMax DistanceDevicesTypical Use
RS-485 / Modbus RTU1,200 mUp to 32Indicator → PLC, multi-drop cell bus
CAN / ISN500 mUp to 127CURIOTEC cell bus, fast diagnostics
RS-23215 mPoint-to-pointIndicator → PC, legacy printer
Ethernet / TCP100 m (switch)NetworkSCADA, MES, cloud gateway

Physical Layer Commissioning

Before analysing frames, KALA verifies cable topology, polarity, shield bonding, reference ground, termination resistors, biasing, connectors and surge protection. We then confirm baud rate, parity, stop bits, addressing and command timing — building a documented baseline for the integration team.

From Protocol to Usable Data

Read stable weight, status and zero state from indicator
Monitor individual digital load cells via CASC KDB-D or CURIOTEC RPWB-D bus
Send weight data to PLC, SCADA, MES or PC applications
Drive remote displays and ticket printers over RS-232 or RS-485
Log diagnostic values (raw counts, corner gains, overload flags) for preventive maintenance

CASC vs CURIOTEC Communication

▶ CASC (KDB-D / DS8)
  • Proprietary RS-485 cell bus with individual addressing
  • DS8 indicator exposes Modbus RTU for PLC integration
  • Corner data, raw counts and fault flags per cell
  • Standard baud: 9600 / 19200 bps
▶ CURIOTEC (RPWB-D / ISN)
  • CAN-based ISN protocol with real-time diagnostics
  • RS-485 option available on RPWB-D and NDSB-D
  • Fast corner balance and overload detection
  • Gateway to Modbus / Ethernet on request

Related Technical Articles

Digital Load Cell Board Decoding – RS-485 & DSB3B-01

RS-485 / Digital

Digital Load Cell Board Decoding – RS-485 & DSB3B-01

Decode RS-485 frames, capture raw counts, and verify sensor performance under real operating conditions.

Read →

Curiotec Digital Load Cells – RS485/CAN and ISN

CAN / ISN

Curiotec Digital Load Cells – RS485/CAN and ISN

CAN bus and ISN feedback for faster fault isolation and stable truck scale performance.

Read →

Truck Scale Weight Errors & ISN Corner Diagnosis

Field Diagnosis

Truck Scale Weight Errors & ISN Corner Diagnosis

Using ISN diagnostics to identify corner deviation and correct weight errors on live truck scales.

Read →

⚡

KALA’s engineering approach
KALA can capture and interpret frames when integration information is limited, then document a repeatable interface for the automation team — whether the project uses CASC DS8 and KDB-D cells or a CURIOTEC platform.

Talk to KALA

Need RS-485, Modbus, CAN or Ethernet integration for your weighing system? Let’s talk.

Scroll to Top