Operating Instructions
Chapter
10
RFI341
8013171/ZO93/2017-08-08
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SICK AG
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31
Appendi
x
Pin assignment for the serial auxiliary data interface on the 15-pole D-Sub-HD plug:
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RxD = Pin 2
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TxD = Pin 3
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GND = Pin 5
Damage to the interface module!
Incorrect wiring of the serial data interfaces can damage electronic components in the
RFH620.
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Observe information about wiring the serial data interface.
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Check the wiring carefully before switching on the RFH620.
1. Connect the connect the RFID device's serial interface to the host in accordance
with the EMC regulations using shielded cables.
Adhere to the maximum cable lengths.
2. To prevent interference, do not lay cables parallel to power supply cables and
motor lines over a longer distance, e. g. in cable channels.
Terminating the RS-422 data interface
Termination can be performed either in connection module CDB620 or CDM420. See
operating instructions "Connection module CDB620" or "Connection module
CDM420".