5-32 Parameter setting
IM 12B6B3-E-H
5-3-7. Communication setup
Code 60 *COMM. The settings should be adjusted to suit the communicating device connected to
the RS485 port.
*SET.
*ADDR.
For the Yokogawa PC402 software package, the default settings match the soft-
ware as shipped.
Code 61 *HOUR The clock/calendar for the logbook is set for current date and time as reference.
*MINUT
*SECND
*YEAR
*MONTH
*DAY
Code 62 *ERASE Erase logbook function to clear the recorded data for a fresh start. This may be
desirable when re-commissioning an instrument that has been out of service for a
while.
5-3-8. General
Code 70 *LOAD The load defaults code allows the instrument to be returned to the default set up
with a single operation. This can be useful when wanting to change from one
application to another.
Code 71 *tH.CHK The wash cleaner can be used to test the response of the electrode system, see
fig. 5-5.
The online response check gives a very good indication of the condition of the
electrode system. The first sign of deterioration of the sensors is usually the
increase in response time.
Code 72 *W. REV Wash reverse is used for very difficult applications where the process rapidly
attacks the sensors, or coats them, or otherwise spoils the measurement. The
wash is then operational most of the time, and is switched off to measure. This
technique gives an output which is updated on a sample and hold basis. To
obtain continuity of output is important therefore to set the hold to ON in the
commissioning menu.
Code 79 *CUST.D Load customer defaults. This code allows the instrument to be returned to the
factory default set, except that buffer tables (code 24,25,26) are unchanged.
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