B-29
FX Series PLC User's Manual - Data Communication Edition
N:N Network
7 Creating Programs
7.1 Checking Contents of Related Devices
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter
Communication
F
Non-Protocol
Communication
(RS/RS2 Instruction)
G
Non-Protocol
Communication
(FX
2N
-232IF)
H
Programming
Communication
I
Remote
Maintenance
Apx.
Discontinued
models
2. Devices for determining errors in the N:N Network
These devices are used for determining errors in the N:N Network. Use them to output link errors to the
outside and interlock sequence programs.
Different devices are used between the FX
1S/FX0N Series and the FX1N/FX2N/FX3U/FX1NC/FX2NC/FX3UC
Series. Use devices according to the PLCs used.
*1. For FX
0N and FX1S PLCs
Station No. 1: M505, Station No. 2: M506, Station No. 3: M507... Station No. 7: M511
For FX
1N, FX2N, FX3U, FX1NC, FX2NC and FX3UC PLCs
Station No. 1: M8184, Station No. 2: M8185, Station No. 3: M8186... Station No. 7: M8190
3. Link devices
These devices are used for sending and receiving information among the PLCs. The device numbers used
and number of devices vary depending on the station number set in D8176 (station number settings) and the
pattern set in D8178 (refresh range setting).
1) In the case of pattern 0
2) In the case of pattern 1
3) In the case of pattern 2
Caution
When creating a program, do not change the information in devices used by other stations. If such
information is changed, other stations will not operate normally.
Device
Name Description
FX0N
FX1S
FX1N, FX2N, FX3U
FX1NC, FX2NC,
FX3UC
M504 M8183
Master station data
transfer sequence
error
This device turns ON when a data transfer sequence
error occurs in the master station.
M505 to M511
*1
M8184 to M8190
*1
Slave station data
transfer sequence
error
This device turns ON when a data transfer sequence
error occurs in a slave station.
M503 M8191
Data transfer
sequence ON
This device remains ON while the N:N Network is
operating.
Station No.
0 (master
station)
1 2 3 4 5 6 7
Word device
(4 points for
each station)
D0 to D3
D10 to
D13
D20 to
D23
D30 to
D33
D40 to
D43
D50 to
D53
D60 to
D63
D70 to
D73
Station No.
0 (master
station)
1 2 3 4 5 6 7
Bit devices
(32 points for
each station)
M1000 to
M1031
M1064 to
M1095
M1128 to
M1159
M1192 to
M1223
M1256 to
M1287
M1320 to
M1351
M1384 to
M1415
M1448 to
M1479
Word device
(4 points for
each station)
D0 to D3
D10 to
D13
D20 to
D23
D30 to
D33
D40 to
D43
D50 to
D53
D60 to
D63
D70 to
D73
Station No.
0 (master
station)
1 2 3 4 5 6 7
Bit devices
(64 points for
each station)
M1000 to
M1063
M1064 to
M1127
M1128 to
M1191
M1192 to
M1255
M1256 to
M1319
M1320 to
M1383
M1384 to
M1447
M1448 to
M1511
Word device
(8 points for
each station)
D0 to D7
D10 to
D17
D20 to
D27
D30 to
D37
D40 to
D47
D50 to
D57
D60 to
D67
D70 to
D77
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