Multi-Channel Weighing Acquisition Module Specification

Model: SJ101CH-2 / SJ101F / SJ101CH-8 / SJ101T |  Category: Multi-Channel RS485 Weighing Acquisition Module

Product Overview

This series of Multi-Channel Weighing Acquisition Modules is designed for industrial scenarios requiring centralized acquisition of multi-point weight signals. The product offers various channel configurations (2, 4, 8, 10), with each channel independently configurable, and utilizes RS485 bus and standard MODBUS-RTU protocol for efficient communication. It supports daisy-chaining of multiple modules, allowing data from all channels of networked modules to be read with a single instruction. It is a core component for building large-scale distributed weighing monitoring systems such as smart warehouses and multi-station production lines.

Core Advantages: Flexible channel configuration to meet different scale needs; Independent parameter settings adapting to complex mixed scenarios; RS485 bus networking for efficient and simple communication; Supports daisy-chain expansion for easy construction of large-scale networks.

Technical Specifications

Structure & Features

• Multi-Channel Flexibility: Supports 2/4/8/10 independent acquisition channels to meet varying scale weighing requirements

• Independent Parameter Configuration: Each channel can be individually set for range, unit, filtering parameters, etc., ensuring isolation

• RS485 + MODBUS-RTU Protocol: Enables single-bus daisy-chaining of multiple modules, allowing all channel weight data to be read via one command

• Scalable Networking: Supports daisy-chain expansion of multiple transmitters, simplifying the deployment of large-scale weighing networks

Core Parameters

Interface & Networking

Communication Interface:

RS485

Networking Method: Supports RS485 bus-style daisy-chaining, allowing dozens of modules to be connected in one network with simple wiring.

Mounting Method: Standard screw fixing or rail mounting (optional accessory).

Sensor Wiring Definition (Per Channel)

• E+: Excitation voltage positive

• E-: Excitation voltage negative

• S+: Signal feedback positive

• S-: Signal feedback negative

• Sh: Shield wire

Protocol Support

Function Features

Channel Management

• Fully independent AD conversion and processing for each channel

• Independent settings: range, zero point, decimal point, filter strength, unit (kg, g, lb, etc.)

• Supports weighing functions like tare and preset points

Network Features

• Unique device address (1-247) to avoid conflicts

• Broadcast commands can be used for synchronous operations like zeroing and taring

• Configurable communication parameters (baud rate, parity, etc.)

Industrial Design

• Metal or high-strength plastic housing for good heat dissipation

• Industrial-grade terminal blocks, resistant to vibration

• Wide operating temperature range, suitable for workshop environments

Application Scenarios

• Smart warehouse shelving (independent monitoring per level or group of locations)

• Synchronous weight acquisition from multiple workstations or hoppers on production lines

• Synchronous weighing of multiple raw materials in配方 batching systems

• Multi-point mechanical performance testing in laboratory equipment

• Weight monitoring for multiple silos in agriculture and feed industries

Customization Services

Qingsi Electronic Technology Co., Ltd. provides professional customization services based on your specific project needs:

• Custom specific channel counts (e.g., 6-channel, 16-channel)

• Add RS232, Ethernet, or wireless communication interfaces

• Develop dedicated communication protocols for specific brand PLCs or MES systems

• Provide complete solutions from modules to system integration

Qingsi Electronic Technology Co., Ltd. All technical specifications subject to change without notice.

For inquiries and technical support: Manager Chen | Tel: +86 15106111829