Bradley Smoker PLC-5/40, ASB Remote I/O Link Cable Belden, Scanner-mode PLC-5 controller

Understanding Your Programmable Controller 1-11

Using a Controller Channel as a Remote I/O Scanner

Configure a remote I/O channel for scanner mode to read and write I/O information between a controller and an I/O device remotely located from the controller.

PLC-5/40

A controller with a channel configured for scanner mode acts as a supervisory controller for other controllers that are in adapter mode as well as remote I/O adapter modules. The scanner-mode PLC-5 controller can:

gather data from node adapter devices in remote I/O racks

process I/O data from 8-, 16-, or 32-point I/O modules

address I/O in 2-, 1-, or 1/2-slot I/O groups support a complementary I/O configuration support block-transfer in any I/O chassis

1771-ASB

Remote I/O

Link Cable:

Belden 9463

PLC-5/20

The scanner-mode PLC-5 controller:

transfers discrete data and block-transfer data to/from modules in remote I/O racks as well as to/from controllers in adapter mode.

scans remote I/O buffers asynchronously to the program scan.

updates the input/output image data table from the remote I/O buffer(s) synchronously to the program scan

PLC-5 data table is updated synchronously to program scan

(at housekeeping).

Remote I/O buffers are updated asynchronously to the program scan.

PLC-5	Controller
Data Table	-resident
	I/O
Output	Input
Remote I/O
Buffer
Output	Input
Remote I/O
Link

Publication 1785-UM012D-EN-P - July 2005