Introduction. Connector Layout 9-Pole Sub-D (RS-232) Connector Layout RS-485 Side. DDS Electronics Europe BV

Transcription

1 Figure Introduction In this document you will find information about the SSDC-4W, see figure. The SSDC-4Wis an RS- to RS-45 interface converter with the following features:?? The RS- side is isolated from the RS-45 side?? Maximum data rate is 5 Kbit/sec.?? The RS-45 side can be configured to operate in -wire (half-duplex) or 4-wire (full-duplex) mode?? Termination resistors for the RS-45 interface can be activated by installing jumpers?? The RS-45 interface is equipped with surge protectors?? Wide supply voltage range ( to 0 VDC)?? Diagnostic LED s show the status of Rx, Tx and power supply voltage?? The converter will work in -wire mode without the need of switching the RTS signal. Connector Layout 9-Pole Sub-D (RS-) On the SSDC-4Wyou will find a female 9-pole Sub-D connector for the RS- interface. The SSDC-4Wacts as a DCE so a one-to-one cable is needed if the converter is to be connected to a PC. The connector layout is as follows: Pin Number Signal Name Remark Direction Not used RxD Data received by the converter (from the RS-45 interface) To the computer TxD Data to be transmitted by the converter (to the RS-45 interface) From the computer 4 DTR Internally connected to pin From the computer 5 Signal Ground DSR Internally connected to pin 4 To the computer RTS Internally connected to pin From the computer CTS Internally connected to pin To the computer 9 Not used Connector Layout RS-45 Side Pin Number Signal Name Remark -way 4-way Tx+ Rx+ Tx- Rx- Tx+ 4 Tx- 5 RS-45 side +VCC Supply voltage -0 VDC Ground Ground power supply Pin is located nearest the Red and Green LED. User Manual SSDC-4W Page of Release.

2 Configuring the SSDC-4W Depending on the type of connection and number of converters, the unit needs to be configured. This is done by placing jumpers which are located inside the converter. To get access to these jumpers you have to open the unit by removing 4 screws on the RS- side of the converter. See figure. This also makes it possible to remove the mounting brackets if you don t need them. Figure Location of the jumpers. Figure Figure 4 shows the function for the various jumpers. Jumper Function Pull down for the RX- line Terminator Rx lines Pull Up for the RX+ line Pull down for the TX- line Terminator TX lines Pull Up for the TX+ line Figure 4 User Manual SSDC-4W Page of Release.

3 Configuration Examples Two SSDC-4W s in a 4-wire point-to-point Two SSDC-4W s in a -wire point-to-point JP JP Tx/ Tx/ JP JP Tx/ Tx/ The SSDC-4W in a 4-wire with another converter. The SSDC-4W in a -wire with another converter. SDC-4W SDC-4W RS-45 converter RS-45 converter User Manual SSDC-4W Page of Release.

4 SSDC-4W s in a 4-wire multi-drop. SSDC-4W s in a -wire multi-drop Tx/ Tx/ JP JP Tx/ Tx/ Tx/ Tx/ Tx/ Tx/ As you can see in the illustrations above, there is a difference in configuring the converters depending on the location in the link. In the converters located at the end of the network terminator resistors must be activated. Default Jumper Setting The converter is shipped with the jumpers placed as shown in figure 5. This means configured for operating in a -wire mode and the terminator resistor activated. Figure 5 User Manual SSDC-4W Page 4 of 4 Release.

5 Configuration Examples Connecting Opto- SSDC-4W and in a -wire SSDC-4W and in a 4-wire SDC-4W SDC-4W OPTO OPTO OPTO OPTO Function of the LED s Led Color Yellow Red Green Function Lights if the supply voltage is present Lights if data is received on the RS-45 interface Lights if data is send by the converter Specifications Power requirements 9-0VDC Power consumption 55mA (VDC) Operating temperature range 0 50 C Optical Isolation 000VDC between RS- and RS45/4 side RS- interface DB-9 female connector RS-45 interface MINI-COMBICON, MC,5/-STF-.5, Phoenix part number 40 Baud Rate Up to max. 5 Kb s RS45/4 full duplex (4-wire mode) RS45 half duplex (-wire mode) Dimensions 9xx0 mm (LxWxH) (without mounting brackets) 9x95x0 mm (LxWxH) (with mounting brackets) Enclosure Metal, anodized aluminum. User Manual SSDC-4W Page 5 of 5 Release.