The BradCommunications™ SST communications module connects your Rockwell Automation ControlLogix® controller with up to 1 Ethernet Modbus TCP and 2 Serial Modbus networks. 03 Apr. 08 DW2007211 Features y Save money! 1 Ethernet + 2 Serial Channels For the Allen-Bradley® ControlLogix® Controller 1 Ethernet and 2 RS232/RS485 Serial Modbus channels on a single slot - 1756 backplane compatible y Save time! No ladder logic to write for configuration and data transfer between module and ControlLogix processor y Boot user configuration and update firmware module through integrated USB port y Data format: Bit, Byte, Word, Dword, Float y RLL feature : configure and diagnose Modbus network remotely via A-B RSLinx® y Advanced Windows configuration and diagnostics tools y Up to 8 SST™ modules can be used in one ControlLogix rack y Support local and remote chassis Protocols y Modbus TCP Client /Server y Modbus Serial Master or Slave (RTU / ASCII) Typical Applications y SCADA / supervisory y y communication Integration of legacy Modbus devices Bridge Rockwell networks to Modbus compatible devices Overview The BradCommunications™ SST™ Ethernet / Serial module connects Rockwell Automation® ControlLogix® controllers to Modbus networks. Each module has 1 Ethernet and 2 Serial communication channels that act as independent Modbus TCP Client/Server and Modbus Master or Slave protocols to exchange data with other Modbus compatible devices. The SST module acts as a 1756 input/output module between the Modbus network and the ControlLogix backplane. The data transfer from the SST™ module to the ControlLogix processor supports 2 modes; a direct mode allowing mapping of Modbus data in I/O processor image (496 inputs bytes / 496 output bytes) and a messaging mode (based on CIP transaction) allowing access to Modbus data images stored in 32K registers of the SST™ module’s memory. The SST module has a USB port on the front panel which can be used for the startup of the module when the user configuration is stored to a USB key. This can also be beneficial if a breakdown occurs, allowing a very quick startup to occur with a new SST module. Configuration and Diagnostics Save your time, the SST module doesn’t require any ladder logic programming to be used. The configuration is created using a PC-based Windows console software connected via RLL (Remote Link Library) functionality allowing a remote access to the SST module for the configuration and the diagnostics through Rockwell network architectures (Ethernet/ControlNet/DeviceNet™). The SST console allows the user to define the network parameters, Modbus devices and the cyclic data exchanges. The console includes a user configuration manager offering services for download, upload, copy, and rename of user configurations. With this, a user can very easily and quickly create a new configuration to initialize and start a SST module. The SST console includes diagnostic tools to help with the commissioning and monitoring of the Modbus connection. These tools allow access in read and write modes to the Modbus slaves or to monitor and modify the module’s internal data shared bound for a Modbus Master. Thus, the user-friendly tools are available for controlling the communication in commissioning phase (PROG mode). This same information is also available in production (RUN mode) through status words making it possible for the user to manage the execution of the control application in its ladder logic. 1 Ethernet + 2 Serial Channels Diagnostic & Software Tools Hardware Specifications • • • • • • • Bus Interface Memory Diagnostics USB Port (pending) Current Consumption Operating Temperature Storage Temperature Regulatory Approvals I/O Mapping (for ControlLogix) - User Configuration Manager - Shared Memory (for ControlLogix) Configuration/Diagnostics ® ® Allen-Bradley 1756 ControlLogix Support multiple modules in a chassis Local and remote rack 128 MB of onboard shared memory 8 MB of flash memory (user configuration and firmware) 4 characters display 3 LEDs indicator: 1 - health of the network (COMM) 2 - communication status (SYS) 3 - initialization complete and module is ok (OK) • Type A, USB 2 and 1.1 compatible • User configuration boot • Module firmware upgrade 850 mA @ 5V or 1.75 mA @ 24V 0ºC (32ºF) up to +60ºC (140ºF) -40ºC (-40°F) up to +85ºC (185°F) CE Class 1 Div 2 (pending) • Maximum 496 bytes input data • Maximum 496 bytes output data • Maximum 250 words status data • Maximum 41 bytes configuration data • 32K words and 32K bits • Read/Write access • Ladder logic based on CIP messaging Windows-based software tools through A-B RSLinx™ and Remote TCP Network Specifications Serial Communication Port - Configuration Console - Ethernet Communication Port Port: 2 distinct Serial ports Speed: 110 to 115200 bps Parity: none, even, and odd Data bits: 5, 6, 7, or 8 Stop bits: 1 or 2 Connector: RJ45 (DB9 male supplied cable) Electrical interface: RS232, RS422 and RS485, 500V galvanic insulation Protocol: Master RTU or ASCII Mode Maximum slave: 127 slaves devices Function code: 0, 1, 2, 3, 4, 5, 6, 15, 16 ® ® Data format: Intel / Motorola Slave RTU or ASCII Mode 32K words / 32K bits shared memory Function Code: 0, 1, 3, 5, 6, 15, 16 Port: 1 distinct Ethernet port Speed: 10/100 Mbps, auto-negotiation Connector: BaseT (RJ45) Protocol: Support client/server modes simultaneously Support TCP and UDP connection Client mode Up to 128 Modbus server devices Support up to 4 simultaneous requests Function code: 0, 1, 2, 3, 4, 15,16 Data format: Intel / Motorola Server mode 32K words / 32K bits shared memory Function Code: 0, 1, 3, 15, 16 Ordering Information Part Number Description SST-ESR2-CLX-RLL BradCommunications™ SST™ 1 Ethernet and 2 Serial ports PLC communications module for Allen-Bradley ControlLogix, includes Remote Link Library feature Also available: SST-SR4-CLX-RLL BradCommunications™ SST™ 4 Serial ports PLC communications module for Allen-Bradley ControlLogix, includes Remote Link Library feature - Modbus Read/Write Data Diagnostic Tool - More Serial and Ethernet protocols available for Altus (AL2000 series), Alstom (Alspa C80-35 & C80-75), GE Fanuc (GE90-30 & 90-70), Mitsubishi (AnA, AnU, AnS, QnA, QnAS), Omron (Sysmac C, CV and CS1), Schneider (Premium, Micro, TSX/PMX), Siemens (S7-200/300/400, S5, TI-505). Please contact us for more information. To contact us: www.woodhead.com Reference Number: DW2007211 Date Published: January 2008 North America: US: + 1 800 225 7724 – Canada: +1 519 725 5136 Europe: France: +33 2 32 96 04 20 – Germany: +49 7252 94 96 0– Italy: +39 010 59 30 77 – United: Kingdom +44 1495 356300 Asia: Shanghai, China: +86 21-5835-9885 - Tianjin, China: +86 22-23321717 Singapore: +65 6268-6868 – Yamato, Japan: +81 46-265-2428 – Nagoya, Japan: +81 52-221-5950 BradCommunications and SST are trademarks of Woodhead Industries. © 2008 Molex Incorporated.
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