Rockwell Automation SMC Dialog Plus User Manual page 125

8-16 Serial Communications
Remote I/O Examples (cont.)
Rung 2:4
This rung sets up the BT buffer for a BTR and sets the Virtual BT_Enable.
User BTR_Avail
Logic
B3:0
1
Rung 2:5
This rung copies the BTR data from the 1747-SN, clears the Virtual BT_Enable, and clears the User Logic Bit.
BTR_Avail Virtual
BTW = 0
BTR = 1
I:1.0 N10:0
10
Rung 2:6
This rung copies the BT information to the 1747-SN for execution.
Rung 2:7
Example #2 – Ladder Logic Program (cont.)
I:1.0
10
Virtual
BT Done
Bit
N10:100
7 13
END
Virtual
BTW = 0
BTR = 1
N10:0
L
7
Virtual
BT_Enable
Bit
N10:0
L
15
COP
COPY FILE
Source #M1:1.100
Dest #N10:100
Length
74
Virtual
BT_Enable
Bit
N10:0
U
15
User
Logic
B3:0
U
1
COP
COPY FILE
Source
#N10:0
Dest #M0:1.100
Length
74