Advantech BB-4WSD9R /
BB-4WSD9TB
Port Powered RS-232 to RS-422/485 Converter
- Change RS-232 TD and RD to RS-485 signals
- Extend RS-232 data signals up to 1.2 km (4,000 ft.)
- Automatic Send Data Control
- Baud rates up to 115.2 kbps
- RS-232 port power or external 12 VDC power jack
- Dipswitch selectable RS-422 or RS-485
Models 4WSD9TB and 4WSD9R, universal serial converters, provide RS-232 to RS-422/RS-485 conversion using either port-power or an external power supply. Model 4WSD9TB has a terminal block RS-485 connector; Model 4WSD9R has a DB9 female RS-485 connector.
Data is converted in both directions, RS-232 Transmit Data is converted to balanced RS-422 or RS-485 Transmit Data. Received RS-422/485 signals are converted to RS-232. Unlike converters which require programming hardware handshaking signals to control RS-422 or RS-485 operation, Models 4WSD9TB and 4WSD9R provide automatic Send Data Control. In RS-485 mode, the RS-485 driver is enabled by circuitry which senses the RS-232 TD input. In half-duplex RS-485 mode, the receiver is enabled when not transmitting. For full-duplex operation, the receiver is set always enabled.
In RS-422 mode, the transmitter and receiver are always enabled. The operating mode is set with 4 switches see Table 1. The converters are powered by the RS-232 signal lines whether they are set high or low. If not enough power is available from the port, or no handshaking lines are available, a DC jack is provided to connect an external 12VDC supply. The DB9 female connector for RS-232 is wired as DCE (like a modem).
Data is converted in both directions, RS-232 Transmit Data is converted to balanced RS-422 or RS-485 Transmit Data. Received RS-422/485 signals are converted to RS-232. Unlike converters which require programming hardware handshaking signals to control RS-422 or RS-485 operation, Models 4WSD9TB and 4WSD9R provide automatic Send Data Control. In RS-485 mode, the RS-485 driver is enabled by circuitry which senses the RS-232 TD input. In half-duplex RS-485 mode, the receiver is enabled when not transmitting. For full-duplex operation, the receiver is set always enabled.
In RS-422 mode, the transmitter and receiver are always enabled. The operating mode is set with 4 switches see Table 1. The converters are powered by the RS-232 signal lines whether they are set high or low. If not enough power is available from the port, or no handshaking lines are available, a DC jack is provided to connect an external 12VDC supply. The DB9 female connector for RS-232 is wired as DCE (like a modem).
SPECIFICATIONS
SERIAL TECHNOLOGY | |
Data Rate | 115.2 kbps maximum |
RS-232 | |
Connector | 4WSD9R: DB9 female 4WSD9TB: DB9 female |
Signals / Port Power * | RD, TD, GND supported. Pins 7 (RTS) and 8 (CTS) are tied together. Pins 6 (DSR), 1 (DCD), and 4 (DTR) are tied together. |
RS-422/485 | |
Connector | 4WSD9R: DB9 female 4WSD9TB: Terminal block |
Biasing Resistors | 4.7k Ohms |
Signals | TDA (-), TDB (+), RDA (-), RDB (+), GND |
Termination | None |
Operation | Dipswitch selectable RS-422 or RS-485 4WSD9R: RS-485 2 or 4-wire or RS-422 4WSD9TB: RS-485 2 or 4-wire or RS-422 |
POWER | |
Source | Port-powered: from RS-232 handshake lines. External 12 VDC power supply, optional. |
* Port-Power | Port-powering requires 7 to 12 VDC supplied on at least one handshake line. |
Power Connector | 2.5 mm plug (tip positive) |
Input Voltage | 12 VDC |
MECHANICAL | |
Dimensions | 4WSD9R: 7.8 x 4.3 x 2.0 cm (3.0 x 1.6 x 0.8 in) 4WSD9TB: 9.0 x 4.3 x 2.3 cm (3.6 x 1.7 x 0.9 in) |
Enclosure | Plastic, Inline |
Weight | 4WSD9R: 49 g (0.10 lbs.) 4WSD9TB: 50 g (0.11 lbs.) |
MTBF | 4WSD9R: 880179 4WSD9TB: 345242 |
MTBF Calc. Method | Parts Count Reliability Prediction |
ENVIRONMENTAL | |
Operating Temperature | 0 to +70 °C (+32 to +158 °F) |
Storage Temperature | -40 to +85 °C (-40 to +185 °F) |
Operating Humidity | 0 - 95% Non-condensing |
DECLARATION OF CONFORMITY - 4WSD9R FCC, CE | |
FCC, CE | |
Directives | 2014/30/EC - Electromagnetic Compatibility Directive |
2011/65/EU - Reduction of Hazardous Substances Directive (RoHS) | |
2012/19/EU - Waste Electrical and Electronic Equipment (WEEE) | |
EMC Standards | EN55032 - Information Technology Equipment - Class B RF Emissions |
EN55024 - Information Technology Equipment - Immunity (LightIndustrial Environments) | |
DECLARATION OF CONFORMITY - 4WSD9TB | |
FCC, CE | |
Directives | 2014/30/EC - Electromagnetic Compatibility Directive |
2011/65/EU - Reduction of Hazardous Substances Directive (RoHS) | |
2012/19/EU - Waste Electrical and Electronic Equipment (WEEE) | |
EMC Standards | EN55022:2010+AC - Information Technology Equipment - Class B RF Emissions |
EN55024 - Information Technology Equipment - Immunity (LightIndustrial Environments) | |
EN61000-4-2 - ESD Immunity | |
EN61000-4-3 - Radiated Immunity | |
EN61000-4-4 - EFT/Burst Immunity | |
EN61000-4-6 - RF Conducted Immunity |
ORDERING INFORMATION
MODEL NUMBER | RS-232 CONNECTOR (DCE) | RS-485 CONNECTOR | OUTPUT | OPTIONAL POWER SUPPLY |
4WSD9R | DB9 Female | DB9 Female | RS-485 2 or 4-wire or RS-422 | X |
4WSD9TB | DB9 Female | Terminal Block | RS-485 2 or 4-wire or RS-422 | X |
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