Yokogawa Wireless Temperature Transmitter YTA510 - Manual (Page 26)

IM 01C50T03-01E 4-5
4. SELF-DIAGNOSTICS
4.3 Logging Function
The YTA series has the capability to store useful
information for trouble shooting.
4.3.1 Error Log
Up to four error histories are stored in the transmitter
memory. The transmitter records an error that contin-
ues to occur for more than 6 minutes.
P20:ERR LOG 1
This parameter records the latest errors that occurred.
P21:ERR LOG 2
This parameter records the last errors that have
occurred.
P22:ERR LOG 3
This parameter records the 2nd to last error.
P23:ERR LOG 4
This parameter records the 3rd to last error.
P24: ERR LOG CLR ...... Error log clear processing
Clears all error logging data.
4.3.2 Min/Max Log
Minimum and Maximum values of the process vari-
ables and terminal temperature are stored in the
transmitter memory. The logged data for the process
variables except for the terminal temperature is reset at
every power off.
To clear the logging data for process variables, select
“ENABLE” at P05: ERR LOG CLR.
4.3.3 Operation Time
P30: OPERATE TIME
The transmitter’s operation time from the last power up
is counted. The information is reset at every power off.
The accuracy of time counting is not guaranteed. It is
simply a reference.
4.3.4 Power Check
P31: POWER CHECK
By setting this parameter to START after power up,
the transmitter can be checked to see if a temporary
loss of power has occurred. This parameter is always
reset to STOP at power off.
4.3.5 BRAIN communication BCC error
occurrence rate
P40: BCC ERROR %
Displays the BCC error occurrence rate of BRAIN
communication.
The % value is calculated from the number of BCC
errors that occurred in BRAIN communication recep-
tion frame and the number of transmissions/receptions.
Turning the power off clears the data.
*1 : This parameter should display the 0 % in normal operation. If
it consistently displays other than that, check the cable wiring
for the transmitter.
*2 : BBC = BRAIN Communication Check.