Operation; General Notes On Operation - Endress+Hauser mycom COM 121 Operating Instructions Manual

mycom COM 121 / 151
6.

Operation

6.1

General notes on operation

Measured
value
display
Display of
selected
matrix field
position
Function keys:
Vertical matrix
field selection
Increase value
Decrease value
The operation of the unit is matrix-oriented,
i.e. each function of the instrument is
assigned one position in a 10 x 10 field matrix
(fields V0 / H0 to V9 / H9, see double page
19/20).
The operating functions are selected via the V
(vertical) and H (horizontal) keys. These keys
step through the matrix fields, including those
which have not been assigned. The key
functions are explained in chapter 6.2.
The functions of the matrix are grouped into
3 levels according to their purpose:
• Level 0:
Indication
(O concentration, saturation
2
index, temperature)
• Level 1:
Operation
(calibration, hold)
Code entry: 1111
• Level 2:
Start-up
(current output assignment,
damping; controller functions)
Code entry: 2222
Without previous entry of code 1111 or 2222,
the content of the matrix fields is only
displayed and cannot be modified.
All matrix fields where the corresponding
function has not been activated display:
Endress+Hauser
Unlocking the levels
• Select matrix field V0 / H0 and press the E
key
• The code number last entered is displayed
in field V8 / H9
• Unlock level 1 Operation by entering
code 1111 or
• level 2 Start-up (including level 1
Operation) by entering code 2222
• Acknowledge by pressing the E key
• Return to matrix field V0 / H0 (measured
value display) by pressing the V and H keys
simultaneously
Locking levels 1 and 2
Proceed as described above but enter any
value except 1111 or 2222.
The instrument is automatically locked (code
0000) following interruptions in operation.
Operation
Indicator /
status arrows
Relay switching
state LEDs
Alarm LED
Function keys:
Horizontal matrix
field selection
Digit selection
Accept
value
Section of
Fig. 6.1:
operating matrix
BE3OM151.CHP
Mycom COM 121 / 151
Front view of instrument
with display and operating
elements
15