Table A.1 Error Codes and Corrective Actions
Error
Code
Display
Symbol
Error Description
Corrective Action
Illegal setup values
have
been
used: Before COOL is used for
OUT2, DIRT ( cooling action ) has
already
been used for OUT1,
or PID mode is not used for OUT1
( that is PB = 0, and / or TI = 0 )
4
Communication error: bad
function code
10
Correct the communication
software to meet the protocol
requirements.
Communication error: register
address out of range
11
Don't issue an over-range
register address to the slave.
Communication error: attempt
to write a read-only data or a
protected data
14
Don't write a read-only data or a
protected data to the slave.
Communication error: write a
value which is out of range to a
register
15
Don't write an over-range data
to the slave register.
26
Fail to perform auto-tuning
function
EEPROM can't be written correctly
29
Return to factory for repair.
Input sensor break, or input
current below 1 mA if 4-20 mA is
selected, or input voltage below
0.25V if 1 - 5V is selected
39
Replace input sensor.
40
A to D converter or related
component(s) malfunction
Return to factory for repair.
Check and correct setup values of
OUT2, PB, TI and OUT1. IF OUT2
is required for cooling control, the
control should use PID mode ( PB
= 0, TI = 0 ) and OUT1 should
use reverse mode (heating action)
, otherwise, don't use OUT2 for
cooling control.
1.The PID values obtained after
auto-tuning procedure are out
of range. Retry auto-tuning.
2.Don't change set point value
during auto-tuning procedure.
3.Use manual tuning instead of
auto-tuning.
5. Don't set a zero value for TI.
4. Don't set a zero value for PB.
6. Touch RESET key
Cold junction compensation for
thermocouple malfunction
30
Return to factory for repair.
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