SST-PB3-SLC SST*通信模块 主或从扫描或模拟PROFlBUS

SST-PB3-SLC

The SST* Communication Module connects Rockwell SLC 500 PLCs as aMaster or Slave to scan or emulate PROFlBUS Dp l/0. With the user-defineddata space of 2064 bytes Input and 2064 bytes Output, the SST” Profibusmodule provides a cost-efficient solution to connect SLC CPUs with largePROFlBUS networks.
A 9-pin serial port included on the scanner allows for firmware upgrades inthe feld and the upload of l/0 configurations.
The SLC’s processor logic scan and the PROFlBUs l/0 scan are independentof each other. The SLC processor reads the scanner input data during itsinput scan and writes the output data during its output scan. The scannerreads input data from the Slaves and writes output data to the Slavesindependent of what the SLC is doing. Slave status, diagnostic statusinformation on all Slaves, network diagnostic counters and DP Masterdiagnostic counters are maintained by the scanner. The scanner does notrequire the set-up of a G-file in the SLC. For more information visit:www.molex.com/link/sstcommunicationmodules.html

The SST-PB3-SLC is the PROFIBUS scanner for the SLC 500. It enables communication between an SLC processor (SLC 5/03 or later) and DP remote I/O devices on a PROFIBUS network, acting as a PROFIBUS DP remote I/O scanner. It:
• Can scan up to 125 Slaves
• Supports up to 244 bytes of input data and 244 bytes of output data per Slave
• If you use the SST PROFIBUS Configuration Tool to configure the scanner, you can have up to 1032 words of input data and 1032 words of output data
• If you use Siemens’s COM PROFIBUS to configure the scanner, it supports up to 160 words of input data and 160 words of output data
• Can reside in any slot in the local SLC chassis except slot 0 (reserved for the SLC processor). You can have multiple scanners in the same rack.
• Supports all standard PROFIBUS baud rates (9600, 19200, 31.25k, 45.45k, 93.75k, 187.5k, 500k, 1.5M, 3M, 6M, 12M)
• Can act as a DP Slave to another DP Master on the same network
• Supports up to 122 words of input data and 122 words of output data as a Slave
• Supports up to four FDL SAPs and up to four FDL message blocks
• Supports DPV1 Master Class 1 and Class 2 messaging

You can configure the I/O on the DP network using either the SST PROFIBUS Configuration Tool or Siemens’s COM PROFIBUS configuration software.
The SST PROFIBUS Configuration Tool allows you to upload the configuration directly to the card, via the scanner’s serial port. The COM PROFIBUS exports the configuration to a *.2bf file (binary), which you can upload from any serial communications software via an Xmodem transfer.
The scanner stores the configuration in its flash memory, so you don’t need to upload the configuration every time you start the SLC, and because all configuration is done with the
Configuration Tool or COM PROFIBUS, you don’t need to set up a G file in the SLC.
1.1.3 Input and Output Data
Input and output data for the Slaves is mapped into SLC I, O, M0 and M1 files. The mapping depends on the addresses you assign in your configuration.
The SLC processor scan and the scanner I/O scan are independent (asynchronous) of each other.
The processor reads the scanner input data during its input scan and writes the output data during its output scan. The scanner continues reading input data from the Slaves and writing output data to the Slaves, regardless of what the SLC is doing