Converters constitute a separate family. They act as intermediate equipment between various standards of digital interfaces. The digital automation equipment is usually based on the RS-485 standard as the basic transmission system, regardless of the actual protocol. PC computers, on the other hand, are most commonly used as HMI or master stations, typically equipped with RS-232 or USB connections. These standards are incompatible and it is required to use an appropriate converter to provide a conflictless coupling of these different interfaces.

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SRS-U/4-Z45

The SRS-U/4-Z45 converter module is used to connect MASTER devices with na USB port to a RS-485 bus. For example, a suitably programmed PC computer can function as the system MASTER... more

Power supply	from USB interface (4,4V ÷ 5,25V DC)
Current consumption	max. 150 mA
USB interface port	1 x type B USB, A to B type cable, length about 3 m
Galvanic separation	separation between USB interface and RS 485 lines

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SRS-2/4-Z45

The SRS-2/4-Z45 converter module is used to connect MASTER devices with a RS-232 port to a RS-485 bus. The module supports devices, which control Tx switching using the RTS signal and... more

Power supply	16 - 30 V DC
RS-232 interface port	1 x 9 PIN Canon (RS 232), cable, length about 1.3 m
Power consumption	typical 0,65 VA; max. 1,6 VA
Galvanic separation	separation between RS-485 interface and RS-232 signals

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