Rockwell Automation 1775-MX_S4A,D17756.3.1 User Manual PLC-3 BACKUP CONC(OR.DU1 User Manual
Page 69
Using the 1775ĆMX
Memory Communication Module
Chapter 4
4-22
Figure 4.3
Example Rung Illustrating Continuous File Transfer
| B1:0 S0:3 +MSG–––––––––––––––––––––––––+
|
+––] [–––] [–––––––––––––––––––––––––––––––+MESSAGE
+–(EN)–+
| 00 17 |Control #B0:0|
|
| |Channel E2.14.1+–(DN)
|
| |START $N2, T |
|
| | +–(ER)
|
| | |
|
| | |
|
| +––––––––––––––––––––––––––––+
|
Bit B1:0/00 is an internal storage bit used to control execution of the
transfer command. You can use any unused data table bit for this purpose. Bit
S0:3/17 is the run/backup bit.
CAUTION: To guard against damage to equipment, make sure
there is sufficient memory available in the backup processor to
accommodate
the files when the memory communication module
(1775-MX) executes a file transfer. If not enough memory is
available, the backup processor will shut down.
Important: If the file list is modified while a file transfer is active, the
changes do not go into effect until the next time you invoke the
START $<file list> command.