Assignment Of Input/Output Numbers (X/Y); Rules For Input/Output Number (X/Y) Assignment; Caution - Mitsubishi FX3UC SERIES User Manual

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition
1.15

Assignment of Input/Output Numbers (X/Y)

When input/output extension blocks are connected to the main unit (CPU), octal numbers are assigned as
input/output numbers (X/Y) when the power is turned ON. Accordingly, it is not usually necessary to specify
input/output numbers using parameters.
It is necessary, however, to assign input/output numbers to the following special extension unit/blocks.
• FX -64CL-M
2N
• FX -16LNK-M (Not supported by the FX
2N

1.15.1 Rules for input/output number (X/Y) assignment

When the power is turned on, input/output numbers (X/Y) are assigned in accordance with the following rules.
It is assumed that input/output numbers have already been assigned in CONFIG mode for remote I/O units
connected to the FX
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 X107...
- Y000 to Y007, Y010 to Y017, Y020 to Y027......, Y070 to Y077, Y100 to Y107...
2. Numbers for added input/output unit/block
For each of the input/output extension blocks connected to the right side of the main unit or input/output
extension block, input/output numbers following the input/output numbers on the main unit or extension block
on the left side are assigned respectively. However, the last digit is assigned from "0".
For example, when the input number in the main unit or extension block on the left side ends at X043, input
numbers starting from X050 are assigned to the extension block on the right side. (When the FX
used, unused numbers are generated in input/output numbers.)
X000 to X017
FX -32MT/D, /DSS, -LT
3UC
Y000 to Y017
3. Input/output numbers in the FX
For each of the remote I/O units connected to the FX
(X) and output numbers (Y) are assigned respectively as a continuation from the input and output numbers on
the last input/output extension block
→ For input and output numbers in remote I/O units connected to the CC-Link/LT master built in the
*1. When the FX
in the FX

1.15.2 Caution

1. When the FX
When the FX
3UC
stations are not occupied.
Note that input/output extension blocks connected on the right side of the main unit do not operate.
74
-32MT-LT built-in CC-Link/LT master.
3UC
X020 to X037
Input extension
block
FX -16EX
2NC
3UC
*1
connected to the main unit.
-64CL-M is connected, input numbers (X) and output numbers (Y) are assigned earlier
2N
-64CL-M than remote I/O units connected to the CC-Link/LT built-in master.
2N
-32MT-LT built-in CC-Link/LT master is in CONFIG mode
3UC
-32MT-LT built-in CC-Link/LT master is in CONFIG mode, inputs and outputs in remote I/O
1.15 Assignment of Input/Output Numbers (X/Y)
-32MT-LT.)
3UC
(X044 to X047:Unused numbers)
X040 to X043
I/O extension
FX -CNV-IF block
2NC
FX
2N
Y020 to Y023
(Y024 to Y027:Unused numbers)
-32MT-LT built-in CC-Link/LT master
-32MT-LT built-in CC-Link/LT master, input numbers
3UC
→ Refer to "1.15.3 Example of assigning" on the next page.
X050 to X067
Input extension
block
-8ER FX -16EX
2N
FX -32MT-LT, refer to Section 9.11.
3UC
1 Outline
-8ER is
2N