Assignment Of Input/Output Numbers (X/Y) And Unit Numbers; Assignment Of Input/Output Numbers (X/Y); Concept Of Assigning - Mitsubishi FX3U SERIES User Manual

FX Series Programmable Controllers
3U
User's Manual - Hardwaer Edition
7. Assignment of Input/Output Numbers (X/Y) and Unit
Numbers
7.1

Assignment of Input/Output Numbers (X/Y)

If input/output powered extension units/blocks have been connected when the power is turned on, the main
unit automatically assigns the input/output numbers (X/Y) (octal) to the units/blocks.
Therefore, it is unnecessary to specify the input/output numbers with parameters.
Accordingly, it is not necessary to specify input/output numbers using parameters.
It is necessary to assign input and output numbers in the following special extension unit/block:
• FX -64CL-M
2N
• FX -16LNK-M
2N
7.1.1

Concept of assigning

When the power is turned on, input/output numbers (X/Y) are assigned in accordance with the following rules.
For special function blocks, such as FX
connected remote I/O stations, refer to the manual for each block.
1. Input/output numbers (X/Y) are octal.
Octal numbers are assigned as input/output numbers (X/Y) as shown below.
- X000 to X007, X010 to X017, X020 to X027......, X070 to X077, X100 to 107...
- Y000 to Y007, Y010 to Y017, Y020 to Y027......, Y070 to Y077, Y100 to Y107...
2. Numbers for added input/output unit/block
To an added input/output powered extension unit/block, input numbers and output numbers following the
input numbers and output numbers given to the preceding device are assigned.
The last digit of the assigned numbers must begin with 0.
For example, when the last number on the preceding device is X043, the input numbers are assigned to the
next device starting from X050.
(When the FX -8ER is used, some input/output numbers are not used.)
2N
X000 to X017
Main unit
FX -32MR/ES
3U
Y000 to Y017
-64CL-M and FX
2N
(X044 to X047: Unused numbers)
X020 to X037 X040 to X043
Input extension Input/output
block extension block
FX -16EX FX -8ER
2N 2N
Y020 to Y023
(Y024 to Y027: Unused numbers)

7 Assignment of Input/Output Numbers (X/Y) and Unit Numbers

7.1 Assignment of Input/Output Numbers (X/Y)
-16LNK-M, that assign input/output numbers to
2N
X050 to X057
Input extension
block
FX -8EX
2N
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