Overview
The SST-PFB-SLC Profibus Scanner Module is a single-slot communication interface manufactured by SST for Allen-Bradley SLC 500 control systems. This module is specifically a Profibus Scanner Module that is compatible for use with Allen-Bradley SLC controllers particularly SLC 5/03 controllers or higher. This module is a chassis-mounted device that occupies a single slot of the SLC 500 rack and is mainly used to implement distributed I/O or remote I/O architecture as this module is capable of communicating with up to 96 Profibus slaves wherein up to 244 Bytes of input data and 244 bytes of output data can be communicated by the module with each slave device.
Key Features
- Can act as a remote I/O scanner that is capable of scanning up to 96 I/O slave devices connected to the bus
- Supports up to 32 Words of direct input and output data and up to 1000 Words of M0 and M1 mapped data
- Has an onboard flash memory for storing configuration files, thereby eliminating the need for reconfiguration on every SLC startup
- Comes with Two (2) 9-pin D-shell communication ports specifically, One (1) RS232 serial configuration port and One (1) Profibus communication interface
- Provides standard status updates such as the FDL, network, and DP master diagnostics updates as well as individual status updates for each slave device connected on the bus
- Can be installed in any I/O slot in the SLC rack except Slot 0 which is usually reserved for the SLC processor, and users can also install multiple scanners on the same rack
Technical Specifications
- Supported Profibus transmission rates and cable distance are 9600 @ 1200 meters; 19200 @ 1200 meters; 93.75k @ 1200 meters; 187.5k @ 1000 meters; 500k @ 400 meters; 1.5M @ 200 meters; 3M, 6M, 12Mbaud @ 100 meters
- Operating temperature of 0-50 Degree Celsius, the storage temperature of -40 to 85 Degree Celsius, and a relative humidity level of 5-95%
- Backplane current consumption of 700 mA @ 5 VDC
- The recommended Profibus cable for use with this module is the Belden 3079A while other compatible cables are either manufactured by Siemens or Bosch
- Allen-Bradley’s blue hose cable with 78 ohms cable impedance is not compatible with this module
Typical Applications
This module is mainly used to implement distributed I/O or remote I/O architecture in manufacturing and process automation environments. Common applications include:
- Remote distributed I/O scanning across Profibus networks
- Multi-slave device communication with SLC 500 controllers
- Real-time data mapping for process control systems
- Integration of Profibus-enabled peripheral devices and sensors
Compatibility & Replacements
Compatible With
- Allen-Bradley SLC 500 chassis (single-slot installation, any slot except Slot 0)
- SLC 5/03 and later processor modules
- Profibus DP master, DP slave, and FDL devices
- Belden 3079A Profibus cable and compatible Siemens/Bosch cables
- SST Profibus configuration tools and Siemens COM PROFIBUS software
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. No confirmed direct replacement modules are documented without explicit product data.
Works With
- Profibus DP communication protocol (master and slave modes)
- All standard Profibus baud rates (9600 through 12 MBaud)
- SLC 500 ladder logic programming via RSLogix 500
- FDL (Fieldbus Data Link) messaging
- DPV1 Master Class 1 and Class 2 messaging capabilities
