Perle Systems Perle IOLAN DS1 - Manual (Page 158)

TruePort I/O
158 IOLAN DS1/TS2 User’s Guide, Version 3.4
TruePort I/O
You can see a sample API I/O over TruePort program called ioapiotp .c on the CD-ROM.
TruePort/Modbus Combination
If you have a Modbus serial application running on a PC that is connected to a network, you can use
TruePort as a virtual serial connection to communicate with the IOLAN over the network to access
I/O data.
The host running TruePort must be in Modbus/ASCII or Modbus/RTU mode.
IOLAN
pe rl e
I/O Digital
Output
PC running a
Modbus Serial
Application/
TruePort
UID: 15
Network
Power