Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 80)

Publication 1794-UM062A-EN-P - September 2012
72 Module Programming
Thereafter, the program continuously performs read block transfers to configure
the module.
The pushbutton allows the user to manually request a block transfer write.
PLC-5 Family Sample Program Structure for a 1794-OE4 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 and send data values.
Thereafter, the program continuously performs read block transfers and write
block transfers.
PLC-5 Family Sample Program Structure for a 1794-IE4XOE2 Module
EN
BTR
BLOCK TRANSFER READ
RACK:
GROUP:
SLOT:
DATA FILE:
2
2
0
N15:0
LENGTH:
CONTROL:
1
N14:0
N14:0
15
DN
ER
BTR Enable Bit
EN
BTW
BLOCK TRANSFER WRITE
RACK:
GROUP:
SLOT:
DATA FILE:
2
2
0
N15:5
LENGTH:
CONTROL:
14
N14:5
DN
ER
1
2
N14:5
15
BTW Enable Bit
N14:5
15
BTW Enable Bit
N14:0
15
BTR Enable Bit
CONTINUOUS: N
CONTINUOUS: N
EN
BTR
BLOCK TRANSFER READ
RACK:
GROUP:
SLOT:
DATA FILE:
7
2
0
B10:0
LENGTH:
CONTROL:
5
B9:0
05
B9:0
15
DN
ER
Block Transfer
Read Done Bit
B9:0
Block Transfer
Write Done Bit
EN
BTR
BLOCK TRANSFER WRITE
RACK:
GROUP:
SLOT:
DATA FILE:
7
2
0
B11:0
LENGTH:
CONTROL:
8
B9:0
DN
ER
1
2