Omega Engineering OMG-CONV-485-ISO 사용자 설명서

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Introduction 
OMG-CONV-485-ISO 
Page 1 
Introduction 
Overview 
The  OMG-CONV-485-ISO  is 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-ISO  is shipped with the following items. If any of these 
items is missing or damaged, contact the supplier. 
• 
OMG-CONV-485-ISO Serial I/O Adapter  
• 
Software 
• 
Power Supply 
Factory Default Settings 
The OMG-CONV-485-ISO factory default settings are as follows: 
Port # 
Electrical Specification 
Port 1 
RS-422 
To install the  OMG-CONV-485-ISO  using factory default settings, refer to 
Installation
For your reference, record installed OMG-CONV-485-ISO settings below: 
Port # 
Electrical Specification 
Port 1