Rockwell Automation POINTBlock Series User Manual page 120

118 POINT I/O Module Data
Publication 1734-UM001D-EN-P - April 2008
24
CH
DeviceNet
SH
Connector
24V
CL
to 5V
RT
Microprocessor
I/O Circuits
Power
I/O Connections
Connections
120V ac or 24V dc
Whatever field power you supply is connected to the
ATTENTION
internal field-power bus. For example, if 120V ac is applied
to the power connections, there will be 120V ac applied to
the modules through the internal field-power bus.
POINT I/O modules to the right of the module will also
have that internal power bus voltage applied, unless you use
a 1734-FPD, 1734-EP24DC, or 1734-EPAC module to
interrupt and change the field power-bus voltage.
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.
The 1734D-IB8XOB8E module produces one byte of input data (scanner Rx)
status. It consumes one byte of output data (scanner Tx).
Default Data Map for the 1734D-IB8XOB8E dc Input/Output Module
Message Size: 1 Byte
7 6 5
Produces Ch7 Ch6 Ch5
(scanner Rx)
Where:0 = off, 1 = on
Message Size: 1 Byte
En
POINTBus
CH
CL
Expansion
5V
GND
Port
Field Bus
Connector
41971
4 3 2 1 0
Ch4 Ch3 Ch2 Ch1 Ch0 Input Data