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15. Connection to PC
15.1. Infrared (IrDa) to RS232 converter cable
A special cable with an optical infrared (IrDa) interface is needed to connect
REF 542plus to a serial port of a PC. This cable is available from ABB.
Fig. 15.1.-1 REF 542plus serial cable with optical infrared (IrDa) interface
A060412
Fig. 15.1.-2 Interface on the HMI for the serial cable with optical infrared (IrDa)
15.2. Null-modem cable
If there is no HMI applied or a direct connection to the base unit is preferred, a
standard null-modem cable can be used to connect the base unit via the so called RS
232 service interface (X72) to the PC.
Multifunction Protection and Switchgear Control Unit
Operator's manual
REF 542plusREF 542plus
1MRS755869
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