User's Manual

The DIOS PIU and Piccolo-XR Units
Downloading new software to a PIU.
1. Connect the PIU adapter RS232 port to the computer with
the FTN6597A cable (see Figure 25).
2. Connect the PIU adapter to an external 12VDC battery or to
an internal 9V battery. (
See page 13 for power options).
3. Connect the PIU unit to an external 12VDC battery or to an
internal 9V battery.
(See page 13 for power options)
4. Use the FKN8203A cable to connect the Adapter port of the
PIU unit to the RS232 connector of the PIU unit to be
programmed.
5. Use the Distributed I/O Service Toolkit Downloader.
For additional information, please refer to the online help of the
DIOS Service Toolkit.
RS232
Programming
Cable
RS232
To PC
A
dapter -
To RS232 of
Programmed PIU
GND
RS485
Connectors
+
-
+
-
Connectors
RS232 -
To Adapter of
Programming PIU
A
da
p
ter
GND
RS485
PIU unit
PIU Adapter Toolkit P
C
Figure 25
PIU Adapter Programming Mode Connections
NOTE!
The grounding connector is also used as an ON/OFF
switch, and the unit cannot be powered on without
connecting it. (See Figure 9.)
35