Communicate with your module – Rockwell Automation 1734-IB2_IB4_IB8, Series C POINT I/O Sink Input Module User Manual
Page 11
POINT I/O Input Modules 11
Publication 1734-IN051H-EN-E - April 2013
Communicate with Your Module
I/O messages are sent to (consumed) and received from (produced) the POINT I/O
modules. These messages are mapped into the processor’s memory.
This POINT I/O input module produces 1 Byte of input data (scanner Rx). It does not
consume I/O data (scanner Tx).
Default Data Map for 1734-IB2
Message size: 1 Byte
7
6
5
4
3
2
1
0
Produces (Rx)
I1
I0
Consumes (Tx)
No consumed data
Where:
I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On
Default Data Map for 1734-IB4
Message size: 1 Byte
7
6
5
4
3
2
1
0
Produces (Rx)
I3
I2
I1
I0
Consumes (Tx)
No consumed data
Where:
I3 = Channel 3, I2 = Channel 2, I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On
Default Data Map for 1734-IB8
Message size: 1 Byte
7
6
5
4
3
2
1
0
Produces (Rx)
I7
I6
I5
I4
I3
I2
I1
I0
Consumes (Tx)
No consumed data
Where:
I7 = Channel 7, I6 = Channel 6, I5 = Channel 5, I4 = Channel 4,
I3 = Channel 3, I2 = Channel 2, I1 = Channel 1, I0 = Channel 0,
0 = Off, 1 = On