
4–10 Communications Overview
Publication 2711-6.0
Discrete I/O Example
The PanelView terminal occupies rack #3 in which its starting
module group is 0. An On/Off push button object is addressed as
I:032/03 and a corresponding indicator as O:032/00.
➁ The PLC ladder program monitors address I:032/03.
Rack #3
0123456701234567
8 Input Words 8 Output Words
I:032
03
032
00
➂ The operator presses the object push button, the PanelView
terminal sets the corresponding address bit.
➃ The ladder program determines input bit 03 is On.
1
I:032
012345611
121314151617
7
0000 00 000000000 1
O:032
Input Word
➀ T
8
words in its rack assignment.
➄ The controller ladder program moves the input bit to the
output bit.
ON
OFF
Pump
CONTROL
PUMP ON
PUMP OFF
➅ The PanelView terminal reads the indicator address and
displays the new state.
ON
OFF
Pump
CONTROL
PUMP ON
PUMP OFF
Output Word
10
012345611
121314151617
710
000 00 000000000 0
PanelView I/O
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