Connection
6.5 Digital input/output
SCALANCE WxM766
Operating Instructions, 03/2022, C79000-G8976-C617-03
59
Note
Terminating resistor
Any connections that are not in use must be fitted with a terminating resistor
, see
(Page 21).
An antenna must always be connected to the antenna connector as soon as the WLAN
interface is switched on. Otherwise, ther
e may be transmission disruptions.
Note
Cabinet installation
When installing the SCALANCE WxM766
-1 in a cabinet, you need to use detached
antennas. Use a suitable flexible connecting cable for a connection between SCALANCE
WxM766
-1 and a detached antenna. You will find detailed information in the section
(Page 21).
NOTICE
UL approval only for use in buildings
Within the area of authority of the NEC and CEC, the SCALANCE WxM766-1 devices
and the antennas connected to them may only be used in a closed building. For this
reason, do not lead antennas into the outdoor area if you need to meet UL or CSA
requirements.
6.5 Digital input/output
The device features a digital input and output (M12 A-coded).
CAUTION
Damage due to voltage being too high or too low
The voltage at the digital input/output must not exceed 30 VDC and not fall below -30
VDC, otherwise the digital input/output will be destroyed.
To avoid evaluating an interference pulse, the pulse for the signal 1 (TRUE / HIGH) must
be at least 200
ms.
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