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FX2NC Series Programmable Controllers Introduction 1.
1-20
1.5.3 Rules
1) Add the input/output points of the extension blocks and special functions blocks to the input/
output points of the main unit. The total number of input points should be 184 points or less,
and the total number of output points should be also 184 points or less. The total number of
input and output points should be no more than 256 points.
2) The FX
2NC
series main unit supplies the control power (5V DC) to the extension blocks and
special function blocks. For this reason, the total current consumption of all the blocks con-
nected to the main unit should not exceed the current capacity of the main unit.
3) Next to the FX
2NC
-CNV-IF, up to 4 blocks can be connected. To connect a special function
unit, such as the FX
2N
-10GM or FX
2N
-1RM-E-SET, refer to the instruction manual of the cor-
responding special function block.
Calculation form for system configuration
Enter current consumption values and input/output points of the extension blocks and special
function blocks while referring to Sec. 1.5.2, and then calculate the total current value
r
and
total input and output points
s
through
v
. From the obtained values, judge whether the blocks
can be connected.