User guide

Health Status
206
890 USE 108 00 August 2001
I/O Module Health Status
Overview of the
I/O Module
Health Status
Words 12 ... 15 display the health of the A120 I/O modules in the four racks.
The following table shows the layout..
Each word contains the health status of up to five A120 I/O modules. The most
significant (left-most) bit represents the health of the module in Slot 1 of the rack:
If the bit is set to "1", the condition is TRUE.
If a module is I/O Mapped and Active, the bit has a value of "1". If a modules is
inactive or not I/O Mapped, the bit has a value of "0".
Word No. Rack No.
Word 12 Rack 1
Word 13 Rack 2
Word 14 Rack 3
Word 15 Rack 4
Note: Slots 1 and 2 in Rack 1 (Word 12) are not used because they are reserved
for use by the controller itself.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Not Used
Slot 5
Slot 4
Slot 3
Slot 2
Slot 1