Fig.6-9:
Assignment of the serial interface XCOM1
D-Sub male connector, 9-pin
Type:
RS232
Cable length:
20 m max.
Cable type:
Shielded, cross-section min. 0.08 mm
2
(AWG28)
Stock number: 1070089307 (3m)
Fig.6-10:
Serial interface XCOM1
Pin
Name
Function
Remark
4
DTR
Start of the AC pow‐
er supply unit test
AC power supply test is started
5
GND
Electrically isolated to 24V GND
6
DSR
Monitoring the out‐
put voltage AC pow‐
er supply unit
Signalizing the output voltage of the AC
power supply unit
7
RTS
PC OK
Voltage applied to the PC, PC ready for
operation
8
CTS
Message UPS oper‐
ation to the PC
UPS operation initiated
Fig.6-11:
Pin assignment XCOM1
The basic function of the UPS is also guaranteed without a con‐
nection to a PC. The AC power supply unit test does not belong to
the basic functions.
6.3.2
Description of the COM Interface
CTS / UPS -> PC UPS operation
initiated
HIGH LEVEL
(+5 V)
The CTS signal indicates after a time delay of 5 s that the UPS operation
was initiated.
Requirement:
The input voltage of the UPS is fallen below +20 V. See also description
of rotary switch S1.
No UPS opera‐
tion
LOW LEVEL
(-5 V)
Project Planning Manual | Rexroth IndraControl VAU 01.1Z
Electric Drives
and Controls
| Bosch Rexroth AG
27/45
Interfaces, Display and Operating Components
Serial interface XCOM1