Siemens FS20 Commissioning, Maintenance, Troubleshooting page 151

Building Technologies
Fire Safety
Connection to PC via FDUZ22x
ϖ The driver for the MCL-USB adapter FDUZ221 or FDUZ227 is installed on the
PC.
ϖ The line tester is fed either internally with batteries or via a mains adapter.
Connect the device to the PC via the MCL-USB adapter. You will find more
κ
information in document 008250. See chapter 'Applicable documents'.
FDUL221
Figure 12: Connect the PC to the line tester
FDUZ221 / FDUZ227
FDUL221
DC
B
If the device has no MC link connection, it is an older device version with an
RS232 connection. You will find more information on this in the next chapter.
Updating the FW of the peripheral devices
USB
DC
FDUZ221/FDUZ227
MC-Link
MCL-USB adapter (interface USB/MC-LINK)
Line tester
Supply with network adapter DC 24 V / 625 mA
Battery compartment 2 x 9 V
Updating the firmware
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