ICP DAS USA DB25 - Manual (Page 20)

DeviceNet to PLCs or Devices
14
C
ONFIGURING
P
ORT
# 3 (P
ASSTHROUGH
)
Not all PLC/Device protocols allow for the pass-through communications. If your selected Protocol on
Port 2 is capable of pass-through communications, the “Port 3 (Passthrough)” header within the “EDIT”
menu will be black (if light gray, the PLC does not support Pass-Through communications). Place the
Highlight bar around the “Port 3 (Passthrough)” header and press the ENTER key to open this screen.
(See drawing below)
A Selected PLC or
Device Protocol
that supports
Pass-Through
Communications
For descriptions of all entry fields on this screen except for the Intermessage Time-Out, refer to
CONFIGURING PORT #2 (PLCs or Devices) in this section.
Intermessage Time-Out
The DN-3000 uses the Intermessage Time-Out to determine when a complete message has been received
on the PassThrough port. Once the first character of a message has been received, if the amount of time
specified by the Intermessage Time-Out passes with no additional characters being received, the DN-3000
will consider the message to be complete and process it.
Check over the communications settings, making corrections as needed, and save this information by
pressing the letter “S” or the F10 function key(s) once. A small window will appear stating the
information was saved. Press the ENTER key, then the ESC key to return to the “EDIT” menu.