Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 77)

Publication 1794-UM062A-EN-P - September 2012
Module Programming 69
PLC-3 Family Sample Program Structure for a 1794-IE8 Module
Program Action
At power-up in RUN mode, or when the processor is switched from PROG to
RUN, the user program enables a block transfer read. Then it initiates a block
transfer write to configure the module if the power-up bit is set.
Thereafter, the program continuously performs read block transfers.
The pushbutton allows the user to manually request a block transfer write to
configure the module.
EN
BTR
BLOCK TRANSFER READ
RACK:
GROUP:
SLOT:
DATA FILE:
7
0
0
B4:0
LENGTH:
CONTROL:
9
B3:0
05
Pushbutton
B3:0
15
DN
ER
Block Transfer
Read Done Bit
B3:0
Block Transfer
Write Done Bit
12
15
13
Enable
Done
Error
EN
BTR
BLOCK TRANSFER WRITE
RACK:
GROUP:
SLOT:
DATA FILE:
7
0
0
B5:0
LENGTH:
CONTROL:
1
B3:0
DN
ER
02
05
03
Enable
Done
Error
Power-up Bit
1
B4:8
15
1
Power-up bit included in Series B modules only.
1
2
TIP You must create the data file for the block transfers before
you enter the block transfer instructions.