AT-4
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3.4 COMMUNICATIONS
3.4.1 RS232 CONNECTION
AT-4 has an RS232 interface onboard. This interface does not support
hardware handshake signals.
Connections:
RXD
Reception (input)
GND
Ground
TXD
Transmission (output)
Note 1: Max. cable length 15 m.
Note 2: Activate the RS232 interface by setting the DIP-switches SW1-2 to
ON. See chapter 5.2 for further details.
TXD
GND
R
XD
K3
Fig. 9: RS232 wiring