Allen-Bradley 1734-OB2, User Manual, Page: 114 / 221

Rockwell Automation Publication 1734-UM001E-EN-P - July 2013
116 POINT I/O Module Data
The 1734D-IA8XOA8 module produces one byte of input data (scanner Rx)
status. It consumes one byte of output data (scanner Tx).
The 1734D-IA8XOW8 module produces one byte of input data (scanner Rx)
status) It consumes one byte of output data (scanner Tx).
The 1734D-IA16 module produces two bytes of input data (scanner Rx). It does
not consume output data (scanner Tx).
For 1734D-IB16 modules, I/O messages are sent to (consumed) and received
from (produced) the POINTBlock I/O modules. These messages are mapped
into the processor’s memory. This module produces two bytes of input data
(scanner Rx) and does not consume output data (scanner Tx).
Default Data Map for the 1734D-IA8XOA8 AC Input/Output Module
Message Size: 1 Byte
7 6 5 4 3 2 1 0
Produces
(scanner Rx) Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Input Data
Where: 0 = off, 1 = on
Message Size: 1 Byte
7 6 5 4 3 2 1 0
Consumes
(scanner Tx) Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Output Data
Where: 0 = off, 1 = on
Default Data Map for the 1734D-IA8XOW8 AC Input/Relay Output Module
Message Size: 1 Byte
7 6 5 4 3 2 1 0
Produces
(scanner Rx) Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Input Data
Where: 0 = off, 1 = on
Message Size: 1 Byte
7 6 5 4 3 2 1 0
Consumes
(scanner Tx) Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Output Data
Where: 0 = off, 1 = on
Default Data for the 1734D-IA16 Module
Message Size: 2 Bytes
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Produces (Rx) I15 I14 I13 I12 I11 I10 I9 I8 I7 I6 I5 I4 I3 I2 I1 I0
Consumes (Tx) No consumed data
Where: I0 = channel 0, I1 = channel 1; 0 = off, 1 = on