Introduction
Overview
The OMG-CONV-485-ISOis a single channel RS-232 to RS-422/485 asynchronous converter. It provides one field selectable RS-422/485 serial port supporting asynchronous data rates up to 115.2K bps. The OMG-CONV-485- ISO is self-powered allowing it to correctly drive multi-drop RS-485 networks.
Configure the port as RS-422 for long distance device connections up to 4000ft. where noise immunity and high data integrity are essential. Select RS-485 and capture data from multiple peripherals in an RS-485 multi-drop network. Up to 31 RS-485 devices can be connected to automate your data collection.
In RS-422 and RS-485 Auto modes, the card works seamlessly with the standard operating system serial driver. Two additional methods are provided to control the communication line in RS-485 mode. The “Data Enable” mode uses the transmitted data to enable the transmitter and requires no software drivers. This mode has limitations that will be discussed in more detail later. The “RTS Enable” mode uses the UART modem control signal RTS to control the communication line and requires the serial driver.
What’s Included
The OMG-CONV-485-ISOis shipped with the following items. If any of these items is missing or damaged, contact the supplier.
∙OMG-CONV-485-ISOSerial I/O Adapter
∙Software
∙Power Supply
Factory Default Settings
The OMG-CONV-485-ISOfactory default settings are as follows:
Port # | Electrical Specification |
Port 1 | RS-422 |
To install the OMG-CONV-485-ISOusing factory default settings, refer to Installation.
For your reference, record installed OMG-CONV-485-ISOsettings below:
Port # | Electrical Specification |
Port 1