RSC232 Communication Converter Installation and Operation Manual
LIMITED WARRANTY The manufacturer offers the customer a 24-month functional warranty on the instrument for faulty workmanship or parts from date of dispatch from the distributor. In all cases, this warranty is valid for 36 months from the date of production. This warranty is on a return to factory basis. The manufacturer does not accept liability for any damage caused by instrument malfunction.
1. General The RSC232 Converter is for conversion of single-ended RS-232 signals to differential RS-422/RS-485 signals, and vice versa. Applications include controlling devices over relatively large distances, and communication with several devices via 1 link (point to multipoint). See Figure 1 below.
2. Mechanical Installation - Wall Mount: 2 options 2.
2.
3. Electrical Installation 3.1 Power Supply RS-422/RS-485 RS-232 This label is located on the inside of the converter cover.
3.2 Setting the Dip Switches To change the dip switch setting, remove the screws on the side of the converter and open the cover. Change the setting by sliding the switch. Default SW1: RS-422/RS-485 RS-422 (4 wire) RS-485 (2 wire) SW1 SW1 ON ON OFF OFF 1 1 2 2 ----------------------------------------------------------------------------------------------------SW2: Baud Rate (kbit per second) NOTE ON OFF 1 2 Baud rate: 3 9.6 38.4 19.2 4 4.
3.
4. Multi-drop Operation Mode More than two devices (up to 10 for RS-422 or up to 32 for RS-485) can be linked together to communicate with one another through several converters or through one converter and several RS-422/RS-485 ports of any other slave devices.
5. LED Indicators - located on the top of the converter LED Indication When Lit Power TXD / RXD TXD / RXD TX enable Power supply on Transmission from RS-232 port to RS-422/RS-485 port Transmission from RS-422/RS-485 port to RS-232 port Transmit enabled to RS-422/RS-485 port 6. Impedance Matching and Termination Resistors When an electrical signal travels through two different resistance junctions in a transmission line, the mismatch will sometimes cause signal reflection.
