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COMPONENT IDENTIFICATION
■ FRONT VIEW
SA1
x10
SA2
RUN LED
x1
B RATE
ERR LED
Configuration Jack
Terminal Block
4
5
6
■ BAUD RATE ROTARY SW
SW POSITION
0
1
2
3
4
Other
Unused. ERR LED turns on if used.
■ SIDE DIP SW
• Data Allocation: SW1, SW2
Data Allocation Type* must be assigned to each I/O mod-
ule position to specify how many data areas (four types)
are to be occupied by each.
Two bits from SW1 and SW2 are assigned to each posi-
tion, and data areas can be specified from the module No. 1
through 8. Setting for No. 9 and later modules is identical
to No. 8.
SW ASSIGNMENT
SW1-1
SW1-2
SW1-3
SW1-4
SW1-5
SW1-6
SW1-7
SW1-8
SW2-1
SW2-2
SW2-3
SW2-4
SW2-5
SW2-6
SW2-7
SW2-8
SW SETTTING
OFF
OFF
ON
OFF
OFF
ON
ON
ON
*Refer to the specifications of the related series for the
Data Allocation Type of I/O modules.
Node Address
Rotary SW
Baud Rate
Rotary SW
FG
SLD
DG
DB
DA
1
2
3
BAUD RATE
156 kbps
625 kbps
2.5 Mbps
5 Mbps
10 Mbps
MODULE NO.
1
2
3
4
5
6
7
8
DATA ALLOCATION
1
4
8
16
■ SIDE VIEW
• Dual Communication: SW3
When two network modules are mounted, one must be
'Main' (OFF) network and the other must be 'Sub' (ON)
network. For single communication, the network module
must always be set to 'Main' (OFF).
SW
SW3-1
• Input Error Data: SW3
Hold: When the communication from an input module is
lost due to the input module error, the network module
holds the signal and stands by until the communication
recovers.
Set to '0': When the communication from an input module
is lost due to the input module error, the network module
outputs '0.'
SW
SW3-2
• LED Function: SW3
Functions assigned to the front RUN and ERR LEDs can
be selected.
SW3-4
OFF (*)
Green when normal
ON
Red when receiving
(*) Factory setting
Functions
SW3
SW2
4
8
3
7
2
6
1
5
4
ON
3
2
1
ON
DUAL COMMUNICATION
MAIN (*)
OFF
INPUT ERROR DATA
HOLD (*)
SET '0'
OFF
LED
RUN
Green when abnormal
Red when transmitting
EM-842 Rev.8
R3-NC2
SW1
8
7
6
5
4
3
2
1
ON
SUB
ON
ON
ERR
P. 2 / 7
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