User's Manual

The DIOS PIU and Piccolo-XR Units
Downloading new software to a Piccolo–XR unit.
1. Connect the PIU adapter RS232 port to the computer using
the FTN6597A cable (see Figure 23).
2. Connect the PIU adapter unit to an external 12VDC battery
or to an internal 9V battery. (
See page 13 for power
options
).
3. Connect the Piccolo–XR unit to an external 6 V DC power
source. (
See Power Connections on page 23.)
4. Use the P4 connector (programming) of the FKN8177A
cable to connect the Piccolo–XR unit to the Adapter port of
the PIU unit.
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
Adapter To
Piccolo XR
GND
RS485
Connectors
+
-
+
-
P
5
P4
Piccolo-XR
PIU Adapter Toolkit P
C
Figure 23
PIU Adapter – Piccolo–XR Downloading 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.)
33