Connecting The Network With Melsecnet/10 - Mitsubishi Electric MELDAS C6 Maintenance Manual

4.13 Connecting the Network with MELSECNET/10

The coaxial bus type and optical loop type networks can be used between the controllers in the
MELSECNET/10 data link system. When using the coaxial bus type, the FCU6-EX878 MELSECNET/10
unit must be mounted in the control unit's extension slot, and when using the optical loop type, the
FCU6-EX879 MELSECNET/10 unit must be mounted.
This unit functions as the control station and normal station of the MELSECNET/10 data link system.
Refer to the AJ71QLP21 (S1)/AJ71QBR11 type MELSECNET/10 Network Unit User's Manual
(Hardware Section) for details on MELSECNET/10.
(1) Connecting the coaxial bus type MELSECNET/10
Connect a dedicated coaxial cable to the MELSECNET/10 unit (FCU6-EX878) connector.
Use the enclosed F-shape connector, and always install the terminator A6RCON (optional) on the
final unit.
Control unit
LED1
MELSEC
NET/10
F-shape
connector
MELSECNET/10
FG wire (Note 5)
FG cable assembly diagram
Recommended terminal type:
AMP 250 Series
170232-2 (for AWG 20-14)
170234-2 (for AWG 12-10)
CAUTION
Incorrect connections could cause device damage, so always connect the cables to the
designated connectors.
Do not connect or disconnect the connection cable between each unit while the power
is ON.
Separate the signal wire from the drive line/power line when wiring.
4. CONTROL UNIT CONNECTIONS
4.13 Connecting the Network with MELSECNET/10
Control unit
(Note 1) Use a high-frequency coaxial cable 3C-2V or
LED1
(Note 2) Lay the coaxial cable at least 100mm away from
(Note 3) Use the following length of coaxial cable according
(Note 4) The BNC-TMP-05 (75) (Hirose Electric) terminator
(Note 5) Connect the FG wire from the FG terminal on the
Terminator
Protective tube or connector housing
AMP: 171809-2 (black)
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5C-2V (compliant with JIS-C-3501).
The BNC-P- -Ni-CAU (DDK) is recommended.
the other drive lines and control cables.
When using in an adverse environment, or when
compliance to EMC Directives is required, use a
double shielded coaxial cable (Mitsubishi Wire
5C-2V-CCY, etc.). Connect the outer shield to the
FG using the shield clamp fitting.
to the total number of stations.
Total number of stations
1 to 9 stations
10 to 32 stations
can be used instead of the A6RCON-R75 (optional).
front of the MELSECNET/10 unit (FCU6-EX878) to
the FG terminal on the bottom of the control unit.
Crimp terminal
Select according to the
terminal block being used.
I - 39
Distance between stations
1 to 500m
1 to 5m
13 to 17m
25 to 500m
Applicable tab shape
0.8±0.025
6.2
0.9
φ2
9.6
5.0