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Serial Communications 8-7

1560D-UM051D-EN-P – February 2005

G-File Configuration

The SLC system uses G-files to configure the R I/O link. G-files are

configured through the SLC programming software. The configuration is

based on the devices connected to the R I/O link. For this example, the

following G-file configuration map for the scanner's I/O image file of the

SMC Dialog Plus™ controller applies.

Address X 15 Data 0 Description

G1:0 xxxx xxxx xxxx xxxx Word 0 cannot be edited.

G1:1 0000 0001 0000 0000 Logical device address (rack 2, start group 0)

G1:2 0000 0001 0000 0000 Logical Image size (1/4 rack)

X Words 3 and 4 do not require configuration since the communication module does not support

Complimentary I/O.

I/O Addressing

The 1203-GD1 communication module uses one-slot addressing. Based

on the module switch settings as described above, the discrete I/O can be

mapped to the PLC I/O Image as shown below.

SLC I/O Image Table Map

SLC I/O Group Number Output Image Input Image

0 Logic Command Logic Status

1 Reference Y Feedback

Y The output image word that maps to the Reference word (O: 1.17, in this example) must have the value 0

to ensure proper SMC Dialog Plus controller operation.

Addressing format

I for input or O for output

Slot number

Word Number

Input or Output Number

(Bit identifier: 0-15)

I : 1 0 / 12