Appendix 3.1.2 Input Modules - Mitsubishi MELESEC-ST User Manual

APPENDICES

Appendix 3.1.2 Input modules

Target module
ST1X2-
ST1X4-
Br.n to Br.n+15
ST1X16-
Target
module
Er.n+15 Er.n+14
ST1X2- -
-
ST1X4- -
-
ST1X16- 0
1
Target
module Er.n+7 Er.n+6
ST1X2- -
-
ST1X4- -
-
ST1X16- 0
1
App - 15
The input module has the following areas for data transfer to and from the head
module.
The structure of each area will be explained.
Module
2-point input module
ST1X2-
4-point input module
ST1X4-
16-point input module
ST1X16-
The value within the parentheses is not used, but the number of assigned points is
occupied.
Write 0 (fixed) when writing a value to the Output Data at the master station.
(1) Input Data
(a) Br Bit Input Area
The Br Bit Input Area will be explained.
Bit Input Item
Br.n to Br.n+1
Br.n to Br.n+3 Input status
(b) Er Error Information Area
The Er Error Information Area will be explained.
Error Information
Er.n+13 Er.n+12
- - -
- - -
- - -
- - -
0 0 1
1 1 1
Error Information
Er.n+5 Er.n+4
- - -
- - -
- - -
- - -
0 0 1
1 1 1
*1: A hardware fault occurs when the input module cannot be recognized
by the head module.
*2: A module error is indicated when any of Er.n , Er.n+4 , Er.n+8 and
Er.n+12 turns ON (1).
Number of
occupied slices Br
1 2
2 4
8 16
Stores the input information (ON/OFF) of the input module.
0: Input OFF
1: Input ON
Er.n+11 Er.n+10 Er.n+9
- - -
- - -
- - -
- - -
0 0 0
1 1 1
Er.n+3 Er.n+2 Er.n+1
- - 0
- - 1
0 0 0
1 1 1
0 0 0
1 1 1
MELSEC-ST
Input Data Output Data
Er Mr Wr Bw
2 1 0 (2)
4 2 0 (4)
16 8 0 (16)
Description
Information
Er.n+8
-
-
Module
-
error
-
1
1
Information
Er.n
1
1
Module
1
error
1
1
1
Ww
Ew
2 0
4 0
16 0
Description
Module error
Hardware fault *1
Module error
Hardware fault *1
Module error *2
Hardware fault *1
Description
Module error
Hardware fault *1
Module error
Hardware fault *1
Module error *2
Hardware fault *1
App - 15