9600 Service Manual - gmecorp-usa.com

PIO Status
Use this menu to read the status of the PIO’s on the Analog Interface PCB.
There are three PIOs on the Analog Interface PCB, each with three ports: A, B, and C.
Each port is responsible for 8 signals.
Select the PIO Status Menu, press any key and scroll through the PIO ports: 1A, 1B, 1C,
2A, 2B, 2C, 3A, 3B and 3C. The hexadecimal content of each port is displayed.
With the desired PIO port displayed, press any key. You may now scroll through the
individual lines within each port to examine their state - high or low. The name of the
signal line is given along with the port designation.
Press any key again to display the associated IC number and the actual IC pin number
along with the line state - high or low. You may toggle back and forth between this mode
and the mode above by pressing any key.
For example -
PIO PORT HEX CONTENTS:
PIO 1B FF H
Individual lines can be read by signal name:
B2 STATOR RUN = LO
or by pin number:
U38 PIN 20 = LO
Typical hex values for each of the 9 individual PIO ports are listed below:
Port 1A=FF H Port 2A=03 H Port 3A=B3 H
Port 1B=00 H Port 2B=40 H Port 3B=FF H
Port 1C=1D H Port 2C=D0 H Port 3C=FF H
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