Communication Between Schneider Conzerv EM6436 Energy Meter & CompactLogix 1769-SM2 Modbus Module скачать в хорошем качестве

Communication Between Schneider Conzerv EM6436 Energy Meter & CompactLogix 1769-SM2 Modbus Module

The 1769-SM2 Compact I/O to DSI module provides a Compact I/O connection for PowerFlex 4-Class drives. It can be used with a MicroLogix 1500, CompactLogix, or a remote 1769-based adapter such as the 1769-ADN. The 1769-SM2 Compact I/O to DSI module features include: • Three Compact I/O connection channels for PowerFlex 4-Class drives. Up to 3 drives can be connected in Single mode (1 per channel) and up to 15 drives can be connected in Multi-Drive mode (5 per channel). Any channel in Multi-Drive mode can also be configured to operate as a Modbus RTU Master, allowing connectivity to a maximum of 31 other Modbus RTU Slave devices, such as PowerFlex 7-Class drives with 20-COMM-H RS485 HVAC adapters. • Use as expansion I/O on MicroLogix 1500 and CompactLogix controllers or with a remote 1769-based adapter. It receives the required power from the Compact I/O backplane. • Parameter-configurable I/O, including Logic Command/Reference and Logic Status/Feedback for each connected drive. • Explicit messaging (parameter read/write, etc.) support for: – MicroLogix 1500 LRP Series C systems when used with RSLogix 500 v6.30 (or higher) – Enhanced CompactLogix processors, such as the -L31, -L32E, and -L35E Explicit messaging is NOT available for CompactLogix -L20 and -L30 processors, or 1769-ADN DeviceNet adapters. • User-defined fault actions to determine how the module and connected drives respond to controllers in idle mode (Idle Action). • Bi-color (red/green) status indicators to report the status of the module and channel communications. • Compatibility with various configuration tools to configure the module and connected drive(s). The tools include an optional, external PowerFlex 4-Class HIM (22-HIM-A3 or 22-HIM-C2S), and drive-configuration software such as DriveExplorer v3.01 (or higher) or DriveExecutive v4.01 (or higher) Energy meter used : Schneider CONZERV Modbus is a data communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices. The Modbus protocol uses character serial communication lines, Ethernet, or the Internet protocol suite as a transport layer. Modbus supports communication to and from multiple devices connected to the same cable or Ethernet network. For example, there can be a device that measures temperature and another device to measure humidity connected to the same cable, both communicating measurements to the same computer, via Modbus. Modbus object types: The following object types may be provided by a Modbus server to a Modbus client device. The addresses are representative of the original Modicon specification. Under the current standard the address can be 0 - 65535 with the object type identified by the command used to read or write the coil or register. Object type Access Size Address Space Coil Read-write 1 bit 00001 – 09999 Discrete input Read-only 1 bit 10001 – 19999 Input register Read-only 16 bits 30001 – 39999 Holding register Read-write 16 bits 40001 – 49999 Protocol versions: Modbus RTU (Remote Terminal Unit) – used in serial communication, and is the most common implementation available for Modbus. Modbus RTU makes use of a compact, binary representation of the data for protocol communication. The RTU format follows the commands/data with a cyclic redundancy check checksum as an error check mechanism to ensure the reliability of data. A Modbus RTU message must be transmitted continuously without inter-character hesitations. Modbus messages are framed (separated) by idle (silent) periods. Modbus TCP/IP or Modbus TCP – a Modbus variant used for communications over TCP/IP networks, connecting over port 502. It does not require a checksum calculation, as lower layers already provide checksum protection. Modbus ASCII – used in serial communication and makes use of ASCII characters for protocol communication. The ASCII format uses a longitudinal redundancy check checksum. Modbus ASCII messages are framed by a leading colon (":") and trailing newline (CR/LF). #industrialautomation #modbus #allenbradley