Instructions

40
English
DC2412-UPSD
|
DC2412-UPS-LDD
|
UPSIC-1205D
|
UPSIC-2403D
12.3 Front connector RS232 (D-SUB)
The connection to computer system is established by a
commercially available D-SUB connection cable (1:1, 9-pin)
(not included in delivery!).
Pin Assignment RS232 (D-SUB)
PIN SIGNAL
1
DCD at PC – Detection cable connected
2
TXD (is connected to RXT at PC)
3
RXD (is connected to TXD at PC)
4
Shutdown signal detection
5
GND
6
DSR at PC – Detection caps loading status
7
RTS at PC – Supply voltage
8
CTS at PC – Power Fail detection
9
N/A
Power Fail High
Low CAP <90%
High CAP >90% or Full Charged
High CAP<90% Low CAP > 90% or Full Charged
PMBF170 PMBF170
4k7
100R
4k7
100R
GND
4k7
Power Fail Low
Q321
Q308
R348
R343
R347
R345
R346
J301,PIN6(CTSONPCORHOST)
J301,PIN2(DSRPCORHOST)CAPSCHANGESTATE
J301,PIN4(RTSONPCORHOST)USEDASSUPPLY
J301,PIN1(DCDONPCORHOST)CABLECONNECTED
Internal connection
Internal connection
Internal interconnection RS232 (D-SUB)