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D7.1 Monitor/Display Parameters – D**
Access and programme structure
The Display Parameters (D***) are separated into several blocks according to the type of operator read only
information. See menu structure in the main body of the manual.
All the Display parameters can be accessed directly from the FUNCTION menu by selecting the appropriate
identification number, e.g. D240.
ENTER PARAMETER No
D -
The live data recalled on the displays are updated continuously by the SMART Communicator every 0.5
seconds, and so represents the latest available information from the MSM400 control unit. When monitoring
these parameters the Psion Organiser is active and so will not switch itself off (the normal action after 5
minutes without any keyboard input).
Additional messages and codes are displayed in a priority order on the LCD when the Display parameters are
in use, to indicate exceptional tank conditions or operational problems.
D7.2 PROGRAM Parameters – P***
Access and Programme Structure
The PROGRAM Parameters are separated into three blocks. These blocks are available for operator access to
configure the MSM400 control unit as required for the particular application, or adjust the normal mode of
operation of the unit. Access to all the PROGRAM parameters is made via the PROGRAM menu.
The three blocks of PROGRAM parameters are as follows:
MODE – The normal operator adjustments equivalent to desludge setup and current input configuration.
Parameters P300 - L102.
ENGINEER – The more technical operator parameters, establishing response time, alarm delay time and HMI
(keypad sound). Parameters P400 - P562.
OUTPUT – These allow Relay and current output configure.
These PROGRAM parameters are read/write parameters, so that when a particular parameter is recalled its
value can be changed by one of three methods – either entering a new value on the blue numeral key pad, or
on the alphabet keys for a text entry parameter, or by scrolling sideways. Each of the parameters uses only one
of these methods : sideways scrolling is prompted by the appearance of horizontal arrows on line 3 of the
LCD. When the new value is on the display correctly, this is entered using the “EXE” key. The SMART
Communicator immediately then transmits the change to the MSM400 control unit. If the value is incorrect
or the operator wants to revert to the original value, the CLEAR/ON key will reinstate the existing parameter
value on the display, without affecting the MSM400 control unit.
Within the memory of the Psion Organiser there are four separate registers for each of the PROGRAM
Parameters. These registers are known as WORKING, SAFE, OFFLINE and DEFAULT, and are further
described in Section D13.0. All programme changes are made in the WORKING register, and these are the
values sent to the MSM400 Control unit memory. The display can be cycled through the registers by using
the MODE key, and the initial letter of the register currently displayed is shown at the right hand end of the
second line – the same line as the parameter value. Individual parameters can be moved into the WORKING
register from other registers, by pressing the EXE key whilst the required register value is displayed.