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슈나이더 일렉트릭 코리아 웹사이트에 방문해 주셔서 감사합니다.

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FAQ 검색
Mapping Device Control Block Bits to I/O Scanner Entry Numbers

Issue
To inform users the incorrect IO scanner device control block bit map in Modicon Quantum with Unity Ethernet Network Modules User Manual.

Product Line
Modicon Quantum

Environment
140NOE77101


Resolution​​​​​
Effected Documentation: Modicon Quantum with Unity Ethernet Network Modules User Manual

Related Product part number: 140NOE77101/11

· To use %MDx.4 as device control block, the double word to enable/disable each I/O scanner entry is described below:

Registertexttexttexttexttexttexttexttexttext
Double
Word
%MDx[0]
Table
Entry #
12345678
textBit3130292827262524
textTable
Entry #
910111213141516
textBit2322212019181716
Double
Word
%MDx[1]
Table
Entry #
1718192021222324
textBit15 **14
**
13
**
12
**
11
**
10
**
9
**
8
**
textTable
Entry #
2526272829303132
textBit7
**
6
**
5
**
4
**
3
**
2
**
1
**
0
**
textTable
Entry #
3334353637383940
textBit3130292827262524
textTable
Entry #
4141434445464748
textBit2322212019181716
textTable Entry 49 through 112texttexttexttexttexttexttexttext
Double
Word
%MDx[4]
Table
Entry #
113114115116117118119120
textBit15 141312111098
textTable
Entry #
121122123124125126127128
textBit76543210
    • NOTE**: it is the bit of MDx[1] used for I/O scanner table entry 17 to 32, not MDx[0].
      Bit number: Bit 0 is a low bit counting from right side.

      Example:
      If users configure %MD1:4 as device control block, %MD1[0] bit 31 can enable/disenable I/O scanner table entry 1. %MD1[1] bit 15 can enable/disenable I/O scanner table entry 17.
· To use %MDx.4 as device control block, users also can use single registers to enable/disable each I/O scanner entry as mapped below:
Registertexttexttexttexttexttexttexttexttext
%MWx+1Table
Entry #
12345678
textBit15141312111098
textTable
Entry #
910111213141516
textBit76543210
%MWx+2Table
Entry #
1718192021222324
textBit15 141312111098
textTable
Entry #
2526272829303132
textBit76543210
%MWx+3Table
Entry #
3334353637383940
textBit15 141312111098
textTable
Entry #
4141434445464748
textBit76543210
Table Entry 49 through 112texttexttexttexttexttexttexttexttext
%MWx+8Table
Entry #
113114115116117118119120
textBit15 141312111098
textTable
Entry #
121122123124125126127128
textBit76543210

    • Bit number: Bit 0 is a low bit counting from right side.
      Example:
      If users configure %MD1:4 as device control block, %MW2 bit 15 can enable/disenable I/O scanner table entry 1. %MW3 bit 15 can enable/disenable I/O scanner table entry 17.

Schneider will correct the documentation -- Modicon Quantum with Unity Ethernet Network Modules User Manual to match the current implementation.

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