Number Of Input/Output Points And Maximum Number Of Input/Output Points; Calculation Of Number Of Input/Output Points - Mitsubishi FX3UC SERIES User Manual

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition
1.8 Number of Input/Output Points and Maximum Number of Input/Output
Points
The number of input/output points and maximum number of input/output points varies depending on the PLC
version and network type.
FX -32MT-LT Earlier than Ver.2.20
3UC
FX -32MT-LT Ver. 2.20 or later, FX
3UC
FX - MT/DSS when CC-Link or AS-i system is not
3UC
used
FX -32MT-LT Ver. 2.20 or later, FX
3UC
FX - MT/DSS when CC-Link system is used
3UC
FX -32MT-LT Ver. 2.20 or later, FX
3UC
FX - MT/DSS when AS-i system is used
3UC
*1. For the number of input/output points and maximum number of input/output Points, refer to Section
1.7.
1.8.1

Calculation of number of input/output points

To obtain the total number of input/output points, count the input/output points of input/output extension
blocks, the remote I/O points of the FX
special function units/blocks.
1. Total the number of input/output points on the main unit and the number of those on the
input/output extension blocks.
To obtain the total number of input/output points, count the input points (X000 and higher) and output points
(Y000 and higher) of the main unit and input/output extension blocks.
2. Count the input/output points of the remote I/O stations connected to the FX
built-in master, FX
Add the number of remote I/O points to the number of input/output points from the main unit and input/output
powered extension units/blocks calculated in the above step.
→ For the method of calculating the number of remote I/O points (CC-Link/LT built-in master),
3. Count the number of input/output occupied points of special function units/blocks.
The number of occupied input/output points per unit is 8.
The number of occupied input/output points of each type of device can be obtained by the following formula or
from the list shown below.
Number of special function
units/blocks
Number of special function
units/blocks
Observe the following instructions when using the following products.

1.8 Number of Input/Output Points and Maximum Number of Input/Output Points

-
3UC
-
3UC
-
3UC
-32MT-LT buit-in master and the input/output occupied points of
3UC
-64CL-M or FX -16LNK-M network.
2N 2N
→ For the method of calculating the number of remote I/O points (FX
→ For the method of calculating the number of remote I/O points (FX
→ For a list of occupied input/output points, refer to Section 1.11.
Number of points per unit
units 8 points
×
Each special function unit/block
used for FROM/TO instructions
occupies eight input or output
points.
Number of Input/ Maximum number of
Output Points *1 input/output points *1
256
MT/D or
256
MT/D or
256
MT/D or
256
refer to the FX
refer to the FX
Number of occupied
input/output points
=
Total number of
occupied input/
output points
1 Outline
Reference
256 Subsection 1.8.1.
256 Subsection 1.8.1.
Subsection 1.8.1.
384
Subsection 1.8.2.
Subsection 1.8.1.
384
Subsection 1.8.3.
-32MT-LT
3UC
refer to Chapter 9.
-64CL-M),
2N
-64CL-M manual.
2N
-16LNK-M),
2N
-16LNK-M manual.
2N
points
49
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