Vision Systems VScom 200E PCIex Instrukcja Użytkownika Pobierz pdf (Strona 15)

3 Hardware Conﬁguration

However the serial port itself

has an option to control the signal DTR exactly as required for

RS 485 operation. This must be activated by conﬁguration in the driver. Select Automatic DTR

as “RS 485 Low Active”, as seen in 4.2.3

Operation Mode Control DIP Conﬁguration Driver Conﬁguration

RS 232

RS 422

RS 485 4-wire by DTR Automatic DTR 4.2.3

RS 485 2-wire by DTR Automatic DTR 4.2.3

RS 485 2-wire with Echo by DTR Automatic DTR 4.2.3

Table 7: Modes on 200Ei PCIex

Also resistors for Termination and BIAS option are built-in, conﬁgured by other switches S3 and

S4 as of table 8.

DIP Function Remark

1 BIAS Tx+ Use with DIP 3

2 Termination Tx+ Tx− 120Ω

3 BIAS Tx− Use with DIP 1

4 BIAS Rx+ Use with DIP 6

5 Termination Rx+ Rx− 120Ω

6 BIAS Rx− Use with DIP 4

Table 8: Termination and BIAS on 200Ei PCIex

DIP are numbered top

down

3.2 VScom 200Ei-SI PCIex

In a functional view the 200Ei-SI is very similar to the non-isolated 200Ei, especially the conﬁg-

uration of operation modes and Termination/BIAS is the same. Conﬁgure the VScom 200EI-SI

PCIex exactly as the VScom 200EI PCIex card, as described above.

The UART for Universal Asynchronous Receiver Transmitter, a 16C950 here

July 2011 VScom Industrial Card User Manual 15

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