Technical data

SIMATIC Box PC 620 Expansions
5-28
SIMATIC Box PC 620 Manual
C79000-G7076-C639-02
5.10 Switch Settings / Jumpers
TTY Jumpers (S1)
S1-1 S1-2 Function
on on Active TTY port (standard setting)
on off TTY send loop separate from power source (passive setting)
off on TTY receive loop separate from power source (passive setting)
on
off
1
2
Figure 5-23 Switch Setting TTY Port Active
For TTY operation of the COM1 port, the settings in the setup menu have to be
changed (see Section 6.1.2).