Operating Manual CMGZ432
26
10 Serial interface (RS232)
The serial interface is operated for example by a personal computer as a kind of „question
and answer“ game: The PC sends a question resp. a command; the electronic unit will
send an answer back. If the answer is missing, the electronic unit or the connection cable
may fail.
10.1 Wiring diagram: RS232 interface
fig. 18: Wiring diagram RS232 interface
C431009e
Reliable connection using maximum baudrate (9600) is guaranteed up to wire length of
10m. If the baudrate is reduced and/or good conditions prevail, considerably greater
distances can be bridged in some cases.
Connection to a PC etc. is done with a 9- or 25-pole Sub-D connector.
