Omron CRT1 - 10-2009, Operation Manual

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167
Units with Screw Terminal Blocks
Section 5-3
Indicator Section
Communications
Indicators Refer to 4-1-3 Communications Indicators .
I/O Indicators The meanings of the input indicators are given in the following table.
The detected status is also shown below for Slave Unit with detection func-
tions.
CRT1-ID08TAH(-1) Only
Setting the Node
Address
The node address is set as a decimal number with the 10s digit set on the left
rotary switch and the 1s digit set on the right rotary switch. (The maximum
node address is 63.)
The setting on the rotary switches is read when power is turned ON.
Internal Circuits
CRT1-ID08TA (NPN)
Name LED status I/O status Meaning
0 to 7 Lit yellow. Input ON The input is ON.
Not lit. Input OFF The input is OFF.
Name LED status I/O status Meaning
0 to 7 Lit red. Short-circuit
detection The power supply is short-
circuited.
Flashing
red. Disconnec-
tion detec-
tion A line is not connected.
Not lit. Normal sta-
tus The Unit is operating nor-
mally.
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
1s digit of node address
10s digit of node address
BS+
BDH
BDL
BS-
V 24 VDC
G
V
Input (0 to 7)
G
Photocoupler
Internal circuits
Physical
layer
DC-DC
converter
(not isolated)
Input circuits