AB 1769-SM2 Compact I/O,DSI Modbus Communication

Technical Specifications for 1769-SM2

About  1769-SM2

The Allen-Bradley 1769-SM2 is a Compact I/O module. This module is compatible for use with CompactLogix and MicroLogix 1500 controllers. It supports Drive Serial Interface (DSI) and MODBUS communication protocol, enabling this module as communication module for interfacing with PowerFlex 4-class drive and PowerFlex 7 class drive with 20-HIM-H-RS485-HVAC communication adapter.

The 1769-SM2 is a single module may be configured to operate at Single drive and Multi-drive mode. It can be mounted as a local I/O expansion module for MicroLogix 1500 controller as well as remote I/O module for CompactLogix controllers. With DSI operation, this module can operate at transmission speed of 19200 bps. With MODBUS RTU communication, it supports transmission rates of 300, 600, 1200, 2400, 4800, 9600, 19200, or 38400 bps.

The 1769-SM2 has a backplane current draw of 350 mA @ 5Vdc and 0 mA @ 24Vdc supplied by the Compact I/O Power Supply. It has a power supply distance rating 4 which means that the module cannot be installed 4 modules away from the Compact I/O power supply.

For Multi-drive operation, only ControlFLASH via the CompactLogix controller backplane can be used.

It consumes module data at a rate of 350 mA at 5V DC and 0 mA at 24V DC supplied by the Compact I/O Power Supply. This module can be used with a MicroLogix 1500, CompactLogix, or a remote 1769-based adapter such as the 1769-ADN. This module uses an expansion I/O on MicroLogix 1500 and CompactLogix controllers or with a remote 1769-based adapter. The 1769-SM2 receives the required power from the Compact I/O backplane.


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