
PC NC Maintenance Manual Chapter 4: Troubleshooting
4-32
Online = O, Offline = * *
Self - Diagnosis Function Specification
During boot up of the PC NC
Table 4.16: Operation Mode Content
System Number
Switch
Mode of operation
Operation Mode
Type
0 Normal operation mode O
1 Normal operation mode O
2 Normal operation mode O
4 Ladder development mode O
E Memory operation mode **
Processing
classification
number display
Progress message display
corresponding to the content of
NC power input processing.
LED Display
System
number SW
Cause of failure
4321
1 LED PORT WRITE
OO O
0, 1, 2, 4, E JCP20 PCB
2 YENET RAM CHECK
OO O
0, 1, 2, 4, E JCP20 PCB
3 SYSTEM-SW READ
O
O
O
0, 1, 2, 4, E JCP20 PCB
4 FLASH TOTAL CHECK
OO O
0, 1, 2 JCP20 PCB
5 JIF PORT READ
OO O
0, 1, 2, 4, E JCP20 PCB
6 REV.READ
OO O
0, 1, 2, 4, E JCP20 PCB
7 ISA-RAM CHECK
OO O
0, 1, 2, 4, E JCP20 PCB
8 YENET INITIAL
O O
0, 1, 2, 4, E JCP20 PCB
9CMOS CLEAR
O O
0, 1, 2, 4, JCP20 PCB
10 CMOS TOTAL CHECK
O O
0, 1, 2, JCP20 PCB
11 PARAMETER READ
O OO
0, 1, 2, 4, JCP20 PCB
12 MOTION INITIAL
O
0, 1, 2, 4, JCP20 PCB, SERVO
13 LADDER START
O
0, 1, 2, 4 JCP20 PCB
14 INTEX INITIAL
OOO
0, 1, 2, 4, E
15 TASK SETUP
O
O
0, 1, 2, 4, E
16 JTABLE SET
OO
0, 1, 2, 4, E JCP20 PCB
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