5
REDUNDANT SYSTEM FUNCTIONS
5.1 Basic Concept of Redundant System
5.1.5 Self Diagnostics Function
5 - 28
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR
STARTING UP A
REDUNDANT SYSTEM
5
REDUNDANT SYSTEM
FUNCTIONS
6
REDUNDANT SYSTEM
NETWORKS
7
PROGRAMMING
CAUTIONS
8
TROUBLESHOOTING
(4) Self Diagnostic at Startup of Redundant CPU
The redundant CPU diagnoses the system based on the points described in Table5.19
when the redundant system is powered on or the CPU modules are unreset (RESET/
L.CLR switch is set to the neutral position) . When detecting an error, the redundant CPU
develops a stop error.
* 1 Indicates the priority of the order in which errors are detected when the both systems are powered
on or the CPU modules are unreset (RESET/L.CLR switch is set to the neutral position).
* 2 The errors may be detected regardless the priority.
* 3 Can be changed to "continue" in the PLC parameters settings of GX Developer.
Table5.19 Self Diagnostic at CPU Module Startup
Priority
*1
Diagnostics Description
Detected Error
Error Message Error Code
1
Redundant CPU
Hardware Check
CPU module hardware check
MAIN CPU DOWN
*2
1000 to 1009
2 RAM check RAM ERROR 1101 to 1109
3 Operation circuit check OPE.CIRCUIT ERR. 1200 to 1202
4 Tracking cable connection check TRK.CABLE ERR. 6120
5 Tracking communication (system status) check TRK.INIT.ERROR 6140
6
Redundant System
Startup Ability
Check
Extension base unit mounting check BASE LAY-ERROR 2010 to 2013
7 For unsupported module being mounted check SP.UNIT VER.ERR. 2151
8 Main base unit bus check
CONTROL-BUS ERR.
*2
1411
9 Extension base unit bus check 1418
10 Extension base unit mounting status EXT.CABLE ERR. 2020
11 Base assignment check SP.UNIT LAY ERR. 2122, 2125
12 Booting check BOOT ERROR 2210, 2211
13 For parameters check MISSING PARA. 2200
14 Parameters and system configuration check SP.UNIT LAY ERR.
2100, 2103,
2106, 2107,
2124, 2125, 2128
15 Intelligent Function Module check
SP.UNIT DOWN
*3
1401, 1403
16 RUN/STOP switch status check OPE.MODE DIFF. 6020
17
Control system and standby system configuration
check
UNIT LAY.DIFF. 6030
18
Control system and standby system CPU module
models check
UNIT LAY.DIFF. 6035
19
For control system and standby system memory card
settings check
CARD TYPE DIFF. 6040, 6041
20 Parameter settings check PARAMETER EEROR
3000 to 3004,
3007, 3040,
3041, 3042
21 File storage to program memory check FILE SET ERROR 2400, 2401
22 Program files check CAN'T EXE.PRG. 2500 to 2504
23 Instruction codes check INSTRCT. CODE ERR. 4000 to 4004
24 Pointer (P) check CAN'T SET(P) 4020, 4021
25 Pointer (I) check CAN'T SET(I) 4030
26 END instruction check MISSING END INS. 4010
27 Link parameter error LINK PARA.ERROR 3100 to 3107
28 Remote password check REMOTE PASS.ERR. 3400, 3401
29 Intelligent parameters check SP.PARA.ERROR 3300 to 3302
30 File consistency check FILE DIFF. 6000
31 Parameter valid drive settings consistency check FILE DIFF. 6001
32 Tracking setting parameter check TRK.PARA.ERROR 6500, 6501
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