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Nomenclature and Functions Section 2-1
The following diagram shows the alternating error code/ node address display.
The master’s error code and master’s node address will be displayed if an
error has occurred at the master.
There is no priority in the error codes; all errors that have occurred will be dis-
played in order. All error codes begin with letters, so they can be distinguished
from node addresses immediately.
Dot Indicators
The following table shows the functions of the dot indicators.
2-1-4 Switch Settings
Unit No. Switch Use this switch to set the unit number of the DeviceNet Unit as a CPU Bus
Unit. The unit number setting determines the CIO and DM area words allo-
cated to the Unit as software switches and the status area.
Setting method: One-digit hexadecimal
Setting range: 0 to F
Note 1. The unit number is set to 0 at the factory.
2. Any unit number from 0 to F can be set as long as it hasn’t been set on
another CPU Bus Unit connected to the same PC.
3. Use a small flat-blade screwdriver to turn the rotary switches; be careful
not to damage the switch.
4. Always turn OFF the PC before changing the unit number setting.
5. If the unit number is the same as one set on another CPU Bus Unit con-
nected to the same PC, a duplicate number error will occur in the PC and
it won’t be possible to start up the DeviceNet network.
Node Address Switches Use these switches to set the node address of the Unit.
Setting method: Two-digit decimal
Setting range: 0 to 63
Error code
(1 s)
Faulty slave's
node address
(1 s)
OFF (0.1 s) OFF (0.3 s)
Error code
(1 s)
OFF (0.1 s) OFF (0.3 s)
If there is an error at the DeviceNet Unit.
OFF (0.3 s)
OFF (0.3 s)
Master's node
address (1 s)
Master's
error code (1 s)
OFF (0.1 s)
Faulty slave's
node address
(1 s)
Indicator Content Display
Left dot Scan list enabled/
disabled, master
function disabled
ON: Master function disabled
Flashing: Scan list disabled mode
OFF: Scan list enabled mode
Right dot Slave function dis-
abled
ON: Slave function disabled
OFF: Slave operating
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
CS1W-DRM21 CJ1W-DRM21
X10
1
9
8
7
6
5
4
3
2
1
0
X10
0
9
8
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
X
10
0
X
10
1
CS1W-DRM21 CJ1W-DRM21