ProSoft Technology MVI56-101S User Manual

Page 129

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MVI56-101S ♦ ControlLogix Platform

Reference

IEC 60870-5-101 Slave Communication Module

User Manual

ProSoft Technology, Inc.

Page 129 of 193

August 2, 2011

Examples:

A value of 4000hex (only Bit 14 set, all others clear) is interpreted as 0.5 decimal

A value of 2000hex (only Bit 13 set, all others clear) is interpreted as 0.25
decimal

A value of 1000hex (only Bit 12 set, all others clear) is interpreted as 0.125
decimal

... and so on until...

A value of 0001hex (Only Bit 0 set, all others clear) is interpreted as
0.000030517578125

Therefore, the actual data values transmitted may be any combination of the
decimal values for any given bit pattern.

M_ME_NC and M_IT_NA

The Monitor Short Floating-Point Measured Value and Monitor Integrated Totals
information objects occupy two words with double-word addressing.

For example, if you configured the following information objects:

The following table describes how these information objects would be stored in
the module.

Inf. Object Address

Module Database Address

500

Words 40 and 41 (Double-word address 20)

501

Words 64 and 65 (Double-word address 32)

502

Word 104 and 105 (Double-word address 52)

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