Table of Contents
Advertisement
FX2N-64CL-M CC-Link/LT Master Block
8.2
Example of I/O number assignment
This paragraph describes I/O number assignment in the configuration example shown below.
PLC
I/O extension
FX
-32MT
2N
The CC-Link/LT master function for the FX Series checks connected remote stations in the
CONFIG mode. At the next power ON, this master function assigns the I/O numbers to each
connected remote station. RD stations do not give any effect on assignment of the I/O
numbers because buffer memories (BFM) are assigned to RD stations in accordance with the
station number.
Assignment result
Station No.1
Station No.2 Remote I/O station (output)
Station No.3
Station No.4
Station No.5
Station No.49
Station No.50
*1 With regard to X and Y, 8 points are occupied as 1 block. As a result, if the number of I/O
points occupied by a station is a number which cannot be divided by "8", unused numbers
are generated.
In the configuration example above, the I/O numbers are assigned as shown below.
X000 to X037 (octal)
PLC
I/O extension
block
FX
-32MT
FX
2N
2N
Y000 to Y017 (octal)
Master block
block
FX
-16EX
FX
-64CL-M
2N
2N
Terminal resistor
4 input
points
Station type
Remote I/O station (input)
Remote I/O station (input)
Remote I/O station
(input/output)
Remote I/O station (input)
RD station (output)
RD station (output)
*1
Unused I/O
Master block
-16EX
FX
-64CL-M
2N
Terminal
resistor
Station
No.1
4 input
points
X040 to X043
−
Y020 to Y021
The 16-point mode is selected because an RD station
is connected.
2 output
16 input
points
points
Number of points I/O assignment (X) I/O assignment (Y) BFM #
4 points
2 points
16 points
4 points
4 points
16 points
16 points
The 16-point mode is selected because an RD station
is connected.
Station
Station
No. 2
No.3
2 output
16 input
points
points
−
X044 to X063
−
Assignment of I/O numbers 8
RD station
4 I/O
4 input
Output points
points
points
16 bits × 2 ch
X040 to X043
--
Y020, Y021
X044 to X063
X064, X065
Y022, Y023
X066 to X071
--
--
X072 to X077
Y024 to Y027
Station
Station
No. 4
No.5
4 I/O
4 input
points
points
X064 to X065
X066 to X071
−
Y022 to Y023
Terminal
resistor
--
--
--
--
--
--
--
--
--
208
--
209
--
Terminal
resistor
RD stations
Nos. 49 and 50
Output points
16 bits × 2 ch
−
−
8-2
Advertisement
Table of Contents
