2-7
Section
Error Processing
33
Note
The EEPROM can be overwritten 50,000 times.
2-7
Error Processing
2-7-1 Troubleshooting Procedure
Use the following procedure for troubleshooting Analog Input Unit errors.
1, 2, 3...
1. Error occurs.
2. Is the ERROR indicator lit?
Yes: Error detected by Analog Input Unit
(Refer to
2-7-2 Errors Detected by Analog Input Unit
.)
No:
Go to the next step.
3. Is the RUN indicator lit?
Yes: Error detected by CPU Unit
(Refer to
2-7-3 Errors Detected by CPU Unit
.)
Check whether the operation mode switch on the back of the Analog
Input Unit is set correctly.
No:
Refer to
2-7-5 Troubleshooting
.
If both the ERROR and RUN indicators are lit, check whether the operation
mode switch on the back of the Analog Input Unit is set correctly.
2-7-2 Errors Detected by Analog Input Unit
When an error occurs at the Analog Input Unit, the ERROR indicator on the front
panel of the Unit lights and the error code is stored in bits 08 to 15 of IR word n+9.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Bit
Word n+9
Error code
Disconnection detection flags
for input numbers 1 to 8.
For the IR word addresses, n = 100 + 10 x unit number.
For Units #A to #F (10 to 15), n = 400 + 10 x (unit number – 10).
Error
code
Error contents
Countermeasure
8
0
In adjustment mode, offset or gain
cannot be adjusted because input
value is out of the permissible
range for adjustment.
If making the adjustment by means
of a connected input device, first
adjust the input device before
adjusting the Analog Input Unit.
8
1
In adjustment mode, adjustment
cannot be performed because the
specified input number is not set
for use or because the wrong input
number is specified.
Check whether the word n input
number to be adjusted is set from
21 to 28.
Check whether the input number to
be adjusted is set for use by
means of the DM setting.
8
2
A disconnection was detected.
(See note.)
Check the rightmost byte of IR
word n+9. The inputs for bits that
are ON may be disconnected.
Restore any disconnected inputs.
8
8
An EEPROM writing error has
occurred while in adjustment
mode.
Turn the Set Bit OFF, ON, and OFF
again.
If the error persists even after the
reset, replace the Analog Input
Unit.
F
3
The wrong number of samplings
has been specified for mean
processing.
Specify a number from 0000 to
0004.
Содержание SYSMAC C200H-AD003
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