Data, Communicate with your module, Data communicate with your module – Rockwell Automation 1734-XXXX POINT I/O Digital and Analog Modules and POINTBlock I/O Modules User Manual

Page 101

Rockwell Automation Publication 1734-UM001E-EN-P - July 2013

POINT I/O Module Data 103

Data

The1734-IE2C module operates in unipolar mode only; the 1734-IE2V module
operates in unipolar or bipolar modes. Data returned from the module is scaled
by the user to any 16-bit signed integer (–32,768…+32,767). Six bytes of data are
read from the 1734-IE2C and 1734-IE2V modules. No data is written to the
input modules.

•

Channel 0 Data (2 bytes)

•

Channel 1 Data (2 bytes)

•

Channel 0 Status (1 byte)

•

Channel 1 Status (1 byte)

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.

(1)

These POINT I/O input modules produces six bytes of input data

(scanner Rx) and fault status data. It does not consume output data (scanner Tx).

(1) These are mapped through scan lists in DeviceNet networks and Direct, Listen Only, or Rack-optimized

connections in ControlNet and EtherNet/IP networks.

Default Data Map for the 1734-IE2C Analog Input Module

Message Size: 6 Bytes

Produces (scanner Rx)

Input Channel 0 High Byte

Input Channel 0 Low Byte

Input Channel 1 High Byte

Input Channel 1 Low Byte

Status Byte for Channel 1

Status Byte for Channel 0

HHA LLA

HHA

LLA

Consumes (scanner Tx)

No consumed data

Where:

CF = Channel Fault status; 0 = no error, 1 = fault
LA = Low Alarm; 0 = no error, 1 = fault
LLA = Low/Low Alarm: 0 = no error, 1 = fault
UR = Underrange; 0 = no error, 1 = fault

CM = Calibration Mode; 0 = normal, 1 = calibration mode
HA = High Alarm; 0 = no error, 1 = fault
HHA = High/High Alarm; 0 = no error, 1 = fault
OR = Overrange; 0 = no error, 1 = fault

Default Data Map for the 1734-IE2V Analog Input Module

Message Size: 6 Bytes