Interface Converter RS-232 to RS-485/422 Serial Interface Converter Installation Manual IC485S IC485SGB IC485SEU
1 10 Overview 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. The IC485S / GB / EU can be powered from the following two ways: 1. DC 9V, 200mA power adapter 2.
9 2 Getting Started 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. Unpacking the IC485S / GB / EU This package should contain: s X INTERFACE CONVERTER s X POWER ADAPTER Installation Before installing the IC485S / GB / EU you will need a 4-wire cable. This cable must go from your location to the place you want to connect to. 1.
3 8 Operation The IC485S / GB / EU supports 4 kinds of functions in 6 types of configurations. Point-to-Point 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 Multidrop Multidrop configuration means that more than two devices can be linked all together to communicate to one another through many IC485S / GB / EU devices. In this configuration, one of the IC485S / GB / EU devices will be connected to a master device and the rest of the IC485S / GB / EU devices will be connected to many other slave devices.
5 6 Multidrop/2-Wire Half Duplex A PC1 => COM1/ COM2 B1 T+ R+ T- R- R- T- R+ T+ IC485S => PC2 COM1/ IC485S COM2 B2 R+ R- => PC3 TT+ COM1/ IC485S COM2 B3 R+ RT- => PC4 T+ COM1/ IC485S COM2 Configuration Device SW1 SW2 A DCE/DTE TxRTS, RxRTS B DCE/DTE TxRTS, RxRTS
5 6 Simplex/Transmit, Receive Only 3IMPLEX 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.
7 4 Monitor Mode 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. Before operating, the user must complete the installation according to the procedure mentioned. Once the installation has been done, the device should operate as the setting function.
3 8 Others Terminal Block Definition The four-screw terminal block has different definitions in different operation modes. )N THE $#% $4% MODE THE TERMINAL 6 AND 6 ARE CONFIGURED TO TRANSMIT DATA THE TRANSMITTER THE TERMINAL 6 AND 6 ARE CONFIGURED TO RECEIVE DATA the receiver, In the monitor mode, the terminals #1 and #2 are respectively the positive and negative of receiver #1; the terminal #3 and #4 are the positive and negative of receiver #2.
9 2 !PPENDIX Troubleshooting )F 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. Check that the 4-wire cable is connected properly at both ends. 4. Check that the SW1 and SW2 are properly set. Check that the data rate and data format are the same for both devices.
1 10 Radio and TV Interference Warning!!! This equipment generates, uses and radiates radio frequency energy and if not installed and used in accordance with the instruction manual may case interference to radio and television reception.
PP5-C9500-211
