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ERE S n.c.                                                                  DC485USB: Instruction Manual                                                         Revision: 1.0

Page 1 of 7

DC485USB

USB 

 

 RS-485 Converter

 

User Information

in accordance with art. 13 of
the Legislative Decree of
25th July 2005, no. 15
”Implementation of Directives
2002/95/EC, 2002/96/EC and
2003/108/EC, relative to
reduction of the use of
hazardous substances in
electrical and electronic
equipment, in addition to
waste disposal”. The crossed
bin symbol shown on the
equipment indicates that at
the end of its working life the
product must be collected
separately from other waste.
The user must therefore take
the above equipment to the
appropriate differentiated
collection centres for
electronic and electro
technical waste, or return it to
the dealer when purchasing a
new appliance of  equivalent
type, in a ratio of one to one.
Appropriate differentiated
waste collection for
subsequent recycling,
treatment and environment-
friendly disposal of the
discarded equipment helps to
prevent possible negative
environmental and health
effects and encourages
recycling of the component
materials of the equipment.
Illegal disposal of the product
by the user will be punished
by application of the
administrative fines provided
for by the legislative decree
no. 22/1997 (article 50 and
following of the legislative
decree no. 22/1997).

Содержание DC485USB

Страница 1: ...ser must therefore take the above equipment to the appropriate differentiated collection centres for electronic and electro technical waste or return it to the dealer when purchasing a new appliance of equivalent type in a ratio of one to one Appropriate differentiated waste collection for subsequent recycling treatment and environment friendly disposal of the discarded equipment helps to prevent ...

Страница 2: ...e an active High TTL output referred to GND derived from the DTR signal of a RS 232 serial port that may be used as a remote ON OFF switch All these lines are protected against overvoltage with transient voltage suppressors The converter is fed through the USB line and its current consumption is less of 100 mAdc therefore is compatible with all types of USB port On each side of the screw terminal ...

Страница 3: ... OFF switch for the external device As the serial port lines also this signal is protected against overvoltages A Supply supervisor circuit controls the reset line of the converter chip to avoid any malfunction due to supply problems The whole device show a current consumption lower than 100 mA therefore it can be connected to any type of USB port and it is completely disabled when the USB port en...

Страница 4: ...tatic discharge In these cases is recommended the use of a shielded cable with the precaution to connect its shield only on one side to obtain an equipotential shield Both the A and B lines are protected against overvoltages by the use o transient voltage suppressors 4 0 2 Power PWR line The DC485USB converter is equipped with an auxiliary output signal called Power PWR that may be used as a remot...

Страница 5: ...ant if the distance between the converter and the device is considerable and if the negative pole of the remote device feeder is not connected to earth This line may be used to connect also the shield of the cable connecting it only on a side to obtain the maximum screening efficiency 4 0 4 Connections to a remote device using the RS 485 serial port The following Figure 3 shows the connection betw...

Страница 6: ...6 of 7 If the PWR signal is not used the connecting cable may contains only 3 wires plus the shielding braid 5 0 Mechanical characteristcs The following Figure 4 shows the mechanical outline of the DC485USB Converter All dimensions are in millimeters inches ...

Страница 7: ...ERE S n c DC485USB Instruction Manual Revision 1 0 Page 7 of 7 ...

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