Advantech PPC-S154T Manuel d'utilisateur Page 40

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PPC-S154T User’s Manual 28
4.3 CMOS Clear for External RTC (JP3)
* default setting
4.4 COM-port Interface
The panel PC provides two serial ports,COM1 : RS-232, COM2:RS-232/
422/485 (in one COM port connector)
4.4.1 COM2 RS-232/422/485 setting (JP4)
COM2 can be configured to operate in RS-232, RS-422, or RS-485 mode.
This is done via J4 settings.
* default setting
Warning: To avoid damaging the computer, always turn
off the power supply before setting “Clear
CMOS”. Set the jumper back to ìNormal opera-
tionî before turning on the power supply.
Table 4.3: Clear CMOS / External RTC (JP3)
*Normal operation Clear CMOS
Table 4.4: COM2 RS-232/422/485 setting (JP4)
*RS-232
1
23
1
23
5
1
9
13
17
2
6
10
14
18
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