TAC Xenta, TAC Xenta® 400 I/O Modules 3 Technical Description
TAC AB, Dec 2004 17 (48)
0-004-7771-3 (EN)
3 Technical Description
3.1 Common Features
3.1.1 Terminals
In all the modules, the first four screw terminals are used in the same
way, i.e. two for the power supply and two for network communication.
3.1.2 Indicators and Service pin
On the front, there is a small hole through which the Service pin may be
activated. There are also two LED indicators, one red and one green.
Fig. 3.1: Terminals 1-4 of the TAC Xenta I/O modules
~ 0
24 V AC
(19-40 V DC)
}
1 2 3 4 5 6 7 8 9 10
G G0 C1C2
Comm
}
Fig. 3.2: LEDs and Service pin of the I/O modules
Service pin
LED: red light = hw fault
or unconfigured node
LED: green blinking light, ~1 Hz =
communication running
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