Connecting An Uninterruptible Power Supply (Ups) - Siemens SIMATIC TP 270 Operating Instructions Manual

Installation and connection
4.3 Connecting the HMI device
Notice
Use a host-host USB cable for the connection between the HMI device and the configuration
computer. Do not use the driver enclosed with the cable for the transfer. Only install the USB
driver supplied with WinCC flexible on the configuration computer. This driver is on the
WinCC flexible CD under "\Support\DeviceDriver\USB".
4.3.7

Connecting an uninterruptible power supply (UPS)

Connecting a UPS
The following options are available to connect a UPS:
• UPS with serial interface
• UPS without serial interface
4-16
A UPS with serial interface is connected directly to the HMI device.
A serial connection is used with a "SITOP DC-USV Module A". The driver for detecting
and configuring the UPS is contained on the WinCC flexible CD and must be installed on
the HMI device using ProSave.
A UPS without serial interface is connected to the PLC.
The UPS signals the power failure to the connected PLC via a digital signal. The PLC
program must then signal the HMI device that runtime must be terminated. To do this, the
PLC changes a tag to which the "Exit runtime" function is configured in WinCC flexible.
Note
In order to use an uninterruptible power supply with serial interface on the HMI device,
the "Uninterruptible Power Supply (UPS)" option must be loaded on the HMI device.
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0