4-1
Section
Controller
38
Node Number Settings
If more than one Controller is connected to a single host through Link Adapters,
each Controller needs an ID number so that the host can discriminate each of
them. Such an ID number is called node number. Each Controller must have a
unique node number.
Each command or response of the Controller includes the node number of the
Controller. Communications will not be possible if the node number is wrong.
The node number must be correctly set regardless of whether the host is con-
nected to a single or multiple Controllers.
The node number is set with the two rotary switches. As shown below, SW1 on
the left is for 10’s digit and SW2 on the right is for 1’s digit, which can set numbers
within a range between 00 and 31.
SW1
SW2
Node number
10’s digit
1’s digit
0
0
0
0
1
1
0
2
2
0
3
3
0
4
4
0
5
5
0
6
6
0
7
7
0
8
8
0
9
9
1
0
10
1
1
11
:
:
:
2
9
29
3
0
30
3
1
31
3
2
Prohibited setting
:
:
:
9
9
Prohibited setting
Note
1. Do not set the node number between 32 and 99.
2. The node number switches are factory-set to 00. The following diagram
shows example settings of 0 and 17.
Node No. 0
Node No. 17
Node Number
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