Rockwell Automation 1756-IF4FXOF2F ControlLogix High-speed Analog I/O Module - Manual (Page 112)

112 Rockwell Automation Publication 1756-UM005B-EN-P - January 2013
Appendix B Tag Definitions
Figure 15 - Tag Editor
Updated Data Tag Structure The tag structure for the module is different than other ControlLogix I/O
modules released previously. The high-speed analog I/O module tags are listed in
an array format and other I/O modules are not.
• In the array format, status and data tags for each channel are grouped
together. For example, the four input channels status and data tags are
listed in a manner similar to the following:
Local:
x:I.In[0].Status
Local:
x:I.In[0].Data
Local:
x:I.In[1].Status
Local:
x:I.In[1].Data
Local:
x:I.In[2].Status
Local:
x:I.In[2].Data
Local:
x:I.In[3].Status
Local:
x:I.In[3].Data
• In the non-array format, status and data tags are not listed together for
each channel. Instead, they are listed together according to tag type, in a
manner similar to the following:
Local:
x:I.Ch0.Status
Local:
x:I.Ch1.Status
Local:
x:I.Ch2.Status
Local:
x:I.Ch3.Status
Local:
x:I.Ch0.Data
Local:
x:I.Ch1.Data
Local:
x:I.Ch2.Data
Local:
x:I.Ch3.Data
Using the array format allows easier interrogation of module status. By simply
indexing a pointer, a single instruction can examine status for all four input
channels.
Specify the input range
for channel 0 here.