1747-6.5.5, SL 500 DeviceNet Scanner Module User Manual
1747-6.5.5, SL 500 DeviceNet Scanner Module User Manual
1747-6.5.5, SL 500 DeviceNet Scanner Module User Manual
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2-6 Planning Your Configuration and Data Mapping Your Devices<br />
1<br />
2<br />
What’s Happening?<br />
The <strong>SL</strong>C <strong>500</strong> processor’s output<br />
data file containing the indicator<br />
light bit for the RediSTATION is<br />
transferred to the <strong>1747</strong>-SDN<br />
<strong>Scanner</strong>’s M0 file data table.<br />
The M0 file data table is then<br />
sent to the RediSTATION via a<br />
polled message from which the<br />
RediSTATION receives its<br />
indicator light bit.<br />
PLC-5 Processor<br />
Output Data File 1<br />
N8:0 0000 0000 0000 000L<br />
N8:1 0000 0000 0000 0000<br />
N8:2 0000 0000 0000 0000<br />
N8:3 0000 0000 0000 0000<br />
N8:4 0000 0000 0000 0000<br />
N8:149 0000 0000 0000 0000<br />
1 This mapping is based upon the example in chapter 4.<br />
The actual mapping for your system may be different.<br />
Publication <strong>1747</strong>-<strong>6.5.5</strong> - August 2000<br />
Mapping RediSTATION Output Data for an M0 File Data Table<br />
Write<br />
The RediSTATION’s output is mapped to the <strong>1747</strong>-SDN module’s M0<br />
file. Within the output byte is a bit for the indicator light. The output<br />
data file is then transferred from the <strong>SL</strong>C <strong>500</strong> processor application to<br />
turn the light on or off.<br />
1<br />
RediSTATION Output Byte<br />
start/stop station node address 7<br />
1 byte L<br />
Example: The RediSTATION’s indicator light (L) is taken<br />
from N8:1/0 in the <strong>SL</strong>C <strong>500</strong> processor’s output data file.<br />
2<br />
<strong>1747</strong>-SDN <strong>Scanner</strong> M1 File Data Table<br />
L = bit for the station<br />
indicator light<br />
= unused bits<br />
L<br />
Word 0<br />
Word 1<br />
Word 2<br />
Word 3<br />
Word 4<br />
Up to<br />
Word 149