H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany • Phone +49 241 9105010
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Operating Manual ZX20T/TP/TC
8.2.8 Step 8: Connecting the Power Supply of the digital Outputs
In the last step the power supply of the digital outputs can be connected. Proceed as
described in chapter 5.6.1 "Connecting the digital outputs". Only switch on the volt-
age supply after connecting the terminals.
9. Diagnosis
The ZX20T, ZX20TP and ZX20TC PLCs have LEDs on the front, which enable easy
monitoring and are also useful for troubleshooting.
A blue LED with the "Pwr" marking indicates the operating voltage supply (see fig.
14).
The states of all digital inputs can be seen via the "Digital Input" LEDs, whereas the
states of the digital outputs are displayed by the "Digital Output" LEDs (see fig. 14).
The controls ZX20TP and ZX20TC have got additional LEDS BF / ERR, SF / RU and
SYS as well as two additional RJ45 connectors each with two LEDs and three fur-
ther LEDs below the ZANDER logo. The following tables show the possible states of
the LEDs and their meaning:
108
ZX20T / TP / TC
U+
Power
L+ M M
BF / ERR
SF / RUN
SYS
Digital Input
01 02 03 04 05 06 07 08 09 10
11 12 13 14 15 16 17 18 19 20
Digital Output
01 02 03 04 05 06
07 08 09 10 11 12 13 14 15 16
RX/TX
RX/TX
Link
Link
ZanderNet
L/A
OUT
L/A
IN
Pwr
Digital Output
Digital Input
Fig. 14: Diagnosis LEDs