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I/O Controller 2 Manual HW group
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Setting up the device
– Frequently Asked Questions
•
Ethernet no longer works but LINK is lit.
Perhaps the device was left in the “RS-232 Setup” mode that is activated by setting
DIP1 = ON? In
this mode, the Ethernet does not respond. Set DIP1 = OFF and restart the device by disconnecting
the power supply for at least 3 seconds.
•
RS-485 communication does not work.
Make sure that termination resistors (120
– 470 Ohms) are present at the line or at the
connector.
•
When using a RS485 converter, configure &I1 or &I2 and remember to turn on HALF DUPLEX
using &H1 .
•
I need to supply power to a RS-232 application.
If you don’t need to control data flow (HW handshake) but need to power a device connected to the
serial port (max. 5
– 10 mA), power your application from the RTS output (pin 7 at the RS-232
connector). The &R0 parameter (&R: RS485/RS422 control) in the setup connects approximately
+8 V to +12 V to this pin.
•
Digital inputs and outputs cannot be controlled. RS-232 data work fine.
Most likely, “NVT” is disabled. Check this at the “UDP Setup” tab in the Hercules utility, in the TCP
Setup, or in the RS-232 Setup.
•
5-second timeout is too short to work with, is it possible to do something about it?
Yes, enable “Keep connection” in the Setup. I/O Controller then sends a command every 6
seconds that appears as
“
NVT: NOP
” in the receiving pane, and the connection does not timeout.