R3-NC2
P. 2 / 7
EM-842 Rev.8
COMPONENT IDENTIFICATION
■
BAUD RATE ROTARY SW
SW POSITION
BAUD RATE
0
156 kbps
1
625 kbps
2
2.5 Mbps
3
5 Mbps
4
10 Mbps
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
MODULE NO.
SW1-1
SW1-2
1
SW1-3
SW1-4
2
SW1-5
SW1-6
3
SW1-7
SW1-8
4
SW2-1
SW2-2
5
SW2-3
SW2-4
6
SW2-5
SW2-6
7
SW2-7
SW2-8
8
SW SETTTING
DATA ALLOCATION
OFF
OFF
1
ON
OFF
4
OFF
ON
8
ON
ON
16
*Refer to the specifications of the related series for the
Data Allocation Type of I/O modules.
RUN LED
■
FRONT VIEW
■
SIDE VIEW
ERR LED
SW2
ON
8
7
6
5
4
3
2
1
SW3
ON
4
3
2
1
ON
8
7
6
5
4
3
2
1
SW1
Functions
1
2
3
4
5
6
Terminal Block
Configuration Jack
5
4 3 2 1
0
9
8
7
6
5
4 3 2 1
0
9
8
7
6
5
4 3 2 1
0
9
8
7
6
FG
SLD
DG
DB
DA
Node Address
Rotary SW
Baud Rate
Rotary SW
SA1
x10
SA2
x1
B RATE
• 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
DUAL COMMUNICATION
MAIN (
*
)
SUB
SW3-1
OFF
ON
• 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
INPUT ERROR DATA
HOLD (
*
)
SET
‘0’
SW3-2
OFF
ON
• LED Function
: SW3
Functions assigned to the front RUN and ERR LEDs can
be selected.
SW3-4
LED
RUN
ERR
OFF (*)
Green when normal
Green when abnormal
ON
Red when receiving
Red when transmitting
(*) Factory setting
