Module Overview and Functional Positioning
The SST-PB3-CLX-RLL is a PROFIBUS scanner module developed by Molex, primarily serving as a communication interface between the ControlLogix (CLX) system and PROFIBUS networks. As a PROFIBUS DP master, it supports data interaction with remote I/O devices and integrates advanced DPV1 communication capabilities to enable complex industrial automation control scenarios. The module features hot-swappable design and built-in diagnostics for real-time monitoring of network status and device operation, making it suitable for industrial control systems requiring high reliability and flexibility.
Data Sheet:
SST-PB3-CLX-RLL scanner module.pdf
Compatible Application Scenarios
1. Compatible Systems and Hardware
Controller Platforms: Suitable for Allen-Bradley ControlLogix 5000 series controllers (e.g., 1756-L55, 1756-L6x), installable in any slot of local or remote CLX racks. A maximum of 8 scanner modules are supported per rack.
Communication Networks: Connects to PROFIBUS DP networks and supports communication with PROFIBUS-compliant slave devices (e.g., Siemens ET 200M, ABB sensors).
Software Environment: Requires programming software such as RSLogix 5000 (Version 15 and above) and PlantScape Control Builder, with network configuration and diagnostics enabled via the SST PROFIBUS Configuration Tool.
2. Typical Application Scenarios
Industrial Automation Production Lines: Enables high-speed data exchange between PLC and distributed I/O devices, such as sensor data acquisition and actuator control.
Process Control Fields: Connects temperature, pressure, and other instrumentation devices in chemical, power, and other industries, supporting thermocouple, RTD, and other signal inputs.
Redundant System Design: Supports up to 15 listen-only connections, enabling hot standby switching in conjunction with primary output connections.
Technical Specifications and Parameters
1. Communication Performance
PROFIBUS Master Functions:Supports both DP master and slave modes, operable as a master-slave simultaneously.
Scans up to 125 slaves, with each slave supporting up to 122 words of input/output data.
Supports standard PROFIBUS baud rates: 9.6k/19.2k/31.25k/45.45k/93.75k/187.5k/500k/1.5M/3M/6M/12M bps.
DPV1 Advanced Functions:Supports DPV1 Class 1 and Class 2 communication protocols, enabling advanced commands such as MSAC1_Read and MSAC2_Write.
Accommodates up to 16 concurrent Class 1 commands and 16 Class 2 connections, suitable for complex parameter configuration and diagnostics.
2. I/O Data Processing
I/O Capacity:Master mode: Up to 1,984 bytes input (4 pages, 500 bytes per page) and 1,968 bytes output (4 pages, 496 bytes per page).
Slave mode: Up to 244 bytes input and 244 bytes output, supporting communication with other masters.
Data Mapping: Configures I/O offset addresses via RSLogix 5000, supporting data types: BYTE, WORD, and DWORD.
3. Hardware and Environmental Parameters
Physical Characteristics:Dimensions: Complies with CLX module standards, mountable on DIN rails with hot-swappable design.
Interfaces: 9-pin PROFIBUS connector (DB9), configuration port (RS-232).
Power Requirements:Backplane power: 5VDC @ 850mA, 24VDC @ 1.75mA.
Environmental Requirements:Operating temperature: 0°C ~ 60°C; storage temperature: -40°C ~ 85°C.
Humidity: 5% ~ 95% (non-condensing); pollution degree 1.
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