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iVIEW-100 Series user’s Manual, 2006, v2.0 ----- 99
7.5 Using COM2 for RS-485 Application
The COM2 is a 2-wire RS-485 port. It includes the following 2 pins:
Pin1(D2+) : connect to DATA+ of RS-485 network
Pin9(D2- ) : connect to DATA- of RS-485 network
The COM2 is a half-duplex 2-wire RS-485 network. It cannot be used in the full-
duplex 4-wire RS-485 application. It is designed to directly drive I-7000 series
modules.
The working steps for I-7000 related applications are given as follows:
1. iVIEW-100 send command string to I-7000 modules
2. Destination I-7000 module execute this command
3. Destination I-7000 module delay 1 byte for settling time
4. Destination I-7000 module echo back the result string to iVIEW-100
NOTE: The delay time in step 3 is only 1 byte.