User Manual
Chapter 5
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Module Status and Input Data
In this chapter you will read about:
• reading data from your module
• input module read block format
Block transfer read programming moves status and data from the
input module to the processor’s data table in one I/O scan
(Table 5.A). The processor user program initiates the request to
transfer data from the input module to the processor.
During normal operation the module transfers up to 12 words to the
processor’s data table file. The words contain module status and
input data from each channel. When a block transfer length of zero
(0) is programmed, the 1771–IXE/D will respond with the Series A
default value of 12.
Table 5.A
BTR Word Assignments for Thermocouple/Millivolt Input
Module (1771-IXE/D)
Decimal Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
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Chapter Objectives
Reading Data from the
Module