Interface Converter RS-232 to RS-485/422 Serial Interface Converter Installation Manual IC485S IC485SGB IC485SEU
1 10 Overview Radio and TV Interference Changing line signals is no longer a problem. StarTech.com’s IC485S / GB / EU converts RS-232 serial interfaces to RS-485/422 serial interfaces. This 2 in 1 converter converts RS232C to either the RS 485 or RS 422 interface. Other features include DCE/ DTE selectable modes, point to point multidrop configuration and the ability to monitor RS 485/422 signals.
9 2 Appendix Getting Started Troubleshooting This section is designed to help you prepare the IC485S / GB / EU for installation. Please read through this section carefully before attempting to install the converter. If failure of printing still exists upon the above solutions, please contact your dealer for help. Problem Failure of Data Transmission Solution 1. Check that the DC9V power adapter is available. 2. Check that the IC485SEU is plugged securely to the PC. 3.
3 8 Operation Others The IC485S / GB / EU supports 4 kinds of functions in 6 types of configurations. Terminal Block Definition Point-to-Point The four-screw terminal block has different definitions in different operation modes. Point-to-Point configuration means two devices that locate different places can be linked together to communicate through a couple of IC485S / GB / EU devices.
7 4 Monitor Mode Multidrop Monitor configuration means an IC485S / GB / EU device can be wired to the lines of RS-232 or RS-422 devices to monitor the line signals. In this configuration the IC485S / GB / EU will change the function of the T+ and T- to R’+ and R’- respectively. Multidrop configuration means that more than two devices can be linked all together to communicate to one another through many IC485S / GB / EU devices.
5 6 Simplex/Transmit, Receive Only Multidrop/2-Wire Half Duplex A COM1/ COM2 B1 T+ R+ R- T- T- PC1 => Simplex configuration means that more than two devices can be linked all together to communicate through many IC485S / GB / EU devices. Its configuration is like the Multidrop’s, but the master device can talk only and the slave devices can listen only.
