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Bosch Rexroth AG | Electric Drives
Interfaces, Display and Operating Components
D-Sub male connector, 9-pin
Pin assignment
6.3.2
Description of the COM Interface
CTS / UPS ⇒ PC UPS operation
initiated
No UPS opera‐
tion
Rexroth IndraControl VAU01.1S | Project Planning Manual
and Controls
Fig.6-8:
Assignment of the serial interface XCOM1
Type:
RS232
Cable length:
20 m max.
Cable type:
Shielded, cross-section min. 0.08 mm
Stock number: 1070089307 (3 m)
Fig.6-9:
Serial interface XCOM1
Pin
Name
Function
4
DTR
Start of the AC pow‐
er supply unit test
5
GND
6
DSR
Monitoring the out‐
put voltage AC pow‐
er supply unit
7
RTS
PC OK
8
CTS
Message UPS oper‐
ation to the PC
Fig.6-10:
Pin assignment XCOM1
The basic function of the UPS is also guaranteed without a con‐
nection to a PC. The battery test does not belong to the basic
functions.
HIGH LEVEL
The CTS signal indicates after a time delay of 5 s that the UPS operation
(+5 V)
was initiated.
Requirement:
LOW LEVEL
(-5 V)
The input voltage of the UPS is fallen below +20 V. See also description
of rotary switch S1
(AWG28)
2
Remark
AC power supply test is started
Electrically isolated to 24 V GND
Signalizing the output voltage of the AC
power supply unit
Voltage applied to the PC, PC ready for
operation
UPS operation initiated
(chapter 6.6 "Rotary Switch S1" on page
26).
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