Rockwell Automation GMLC Reference Manual - Manual (Page 653)

Publication GMLC-5.2 - November 1999
616 System Functions
* User-defined discrete inputs 0 – 3 correspond to PLC output bits 14
– 17 (octal) in the appropriate I/O group.
The RIO_input function is evaluated as 1 (true) if the input is ON and 0
(false) if it is OFF.
RIO Scanner Input
Use the RIO_scanner_input function to directly specify the RIO scanner
inputs on IMC-S/2xx-R model motion controllers in an expression. The
RIO_scanner_input function is not available for 1394 or Compact motion
controllers.
You define and select RIO scanner inputs in the Tag Explorer (under RIO
Scanner Input) and Tag Window. It is not necessary to use the RIO
scanner input function to specify them directly.
Syntax:
RIO_scanner_input[group, address]
The RIO_scanner_input function is evaluated as 1 (true) if the input is ON
and 0 (false) if it is OFF.
Starting Group 0 2 4 6 0 2 4 0 2 0
Rack Size 1/4 1/2 3/4 Full
Argument Description
Group The starting group of the discrete I/O to be read. (Take this from the RIO
Scanner Input dialog box, shown below.)
Address The address, or bit number, of the selected starting group to be read. (Take
this from the RIO Scanner Input dialog box, shown below.)
User-Defined
Discrete Inputs
Correspond to PLC Outputs in I/O Group…