Catalogs > Automation Systems Catalog > I/O > In-Cabinet Distributed I/O > 1790/D/P CompactBlock LDX I/O
1790/D/P CompactBlock LDX I/O
| Introduction |  |
Product Design | |
Communication | |
Typical Configuration | |
Specifications | |
| Digital I/O Base Blocks | |
Analog I/O Base Blocks | |
Digital I/O Expansion Blocks | |
Accessory Products | |
For More Information | |
DeviceNet Network
CompactBlock LDX I/O modules are compatible with PLC, SLC, ControlLogix, CompactLogix, MicroLogix1500 or SoftLogix programmable controllers when used with DeviceNet scanners. The CompactBlock LDX I/O module AC ts as a slave in a master/slave environment. I/O data is exchanged with the master through a polled, cyclic, or change-of-state connection. This selection is made in the DeviceNet scanner module's configuration.
CompactBlock LDX I/O modules require RSNetWorx for DeviceNet software, version 3.0 or later (version 7.0 or later recommended). Additionally, current functions of CompactBlock LDX I/O modules require current, modular EDS files for RSNetWorx for DeviceNet software. These files are easy to install and are available online at http://www.ab.com/networks/eds/.
The DeviceNet network supplies power to the CompactBlock I/O base and expansion modules. Inputs and outputs are powered by an external 24V DC source that is independent of the network.
PROFIBUS DP Network
Optimized for high speed and inexpensive installation, the PROFIBUS DP network (decentralized periphery) is designed especially for communication between programmable controllers (PLCs) and distributed I/O at the device level. Data exchange is mainly cyclic with field devices such as I/O, valves, drives, and measuring transducers. The primary controller (master) reads the input information from the field devices (slaves) and sends the output information back to the slaves.
You can configure CompactBlock I/O modules using GSD files and any PROFIBUS DP configuration package. The GSD files are available online at http://www.ab.com/networks/gsd/.
An external power supply for the PROFIBUS network is required for CompactBlock LDX I/O base modules. Inputs and outputs are powered by an external 24V DC source which is independent of the network.