Chapter 6 I/O Specifications
6-4
The following explains the external I/O assignment. The external I/O numbers for the MICRO-EH system are expressed
with the following conventions.
Table 6.6 List of external I/O classification and data type
Classification I/O classification
Data type
Remarks
X
External input
Bit type
Corresponds to the signal of each terminal block.
WX
Word type (16-bit)
Data in the range 0 to 15 is batch processed.
16-bit synchronicity guaranteed.
DX
Double-word type (32-bit) Two word data are batch expressed.
Lower 16-bit and upper 16-bit synchronicity are
not guaranteed.
Y
External output
Bit type
Corresponds to the signal of each terminal block.
WY
Word type (16-bit)
Data in the range 0 to 15 is batch processed.
16-bit synchronicity guaranteed.
DY
Double-word type (32-bit) Two word data are expressed as one batch.
Lower 16-bit and upper 16-bit synchronicity are
not guaranteed.
Table 6.7 List of I/O number conventions for external I/O
Data type
Numbering convention
Example
Bit type (basic)
X
Y
Input
Output
Bit number
Slot number (X:0 Y:1)
Unit number (0)
Bit type
(expansion)
X
Y
Input
Output
Bit number
(X:00-07/15 Y:16-21/27)
Slot number (0)
Unit number (1-4)
Word type
(basic/expansion)
WX
WY
Word number
Slot number
Unit number (1-4)
X0
~
X12, WX30,WX31
Y100
~
Y109, WY40
X1000
~
X1015
Y1016
~
Y1021
WX201
~
WX204
WY206, WY207
EH-A23DRP
EH-A28EDR
EH-A6EAN (Analog exp.)
Summary of Contents for HIDIC MICRO-EH
Page 1: ...HITACHI PROGRAMMABLE CONTROLLER APPLICATION MANUAL NJI 350B X ...
Page 12: ...MEMO ...
Page 14: ...Chapter 1 Features 1 2 MEMO ...
Page 50: ...Chapter 4 Product lineup and wiring 4 18 MEMO ...
Page 196: ...Chapter 5 Instruction Specifications 5 146 ...
Page 263: ...Chapter 11 Communication Specifications 11 10 MEMO ...