
6
6.1 LCD–Mounted Type i Series Hardware
160
Alarm LED (red) indication at system alarm occurrence
Alarm: 1 2 3 Cause
jjj Usual operation under way
Jjj Bus error (L–bus alarm)
jJj Bus error or DRAM parity (L–bus EMG)
JJj Reset under way
jjJ I/O link error
JjJ (Reserved)
jJJ SRAM parity
JJJ I/O SRAM parity
Alarm LED Cause
DRMPTY DRAM PARITY
BUSERR L–bus error (when the CPU peripheral control G/A is the
master)
J: On j: Off
NOTE The alarm LED indicates that a reset is under way immediately after
the power is turned on.
6.1.3.6 Sub–CPU board
D Specification
Name7
Specification
Sub–CPU board A20B–8002–0190
NOTE The sub–CPU board cannot fit into any of the following slots.
· Center slot of a unit with 3 option slots
· Option slot farthest from the LCD in a unit with 4 option slots
D Connector mounting location
JNA
JA41 JA40
CA69
F–bus backplane connector
Connector number Application
CA69 Servo check
JA41 Serial spindle/position coder
JA40 Analog output