Dynisco ATC770-0-2-3 User Manual

ATC770 Microprocessor-Based Pressure/Process Controller 45
6.5.1 SETTING THE SECURITY CODE FOR LEVEL A
To view or change the security code, press the FUNC key and the lower display changes to
CODE.A . The upper display shows 0 , which indicates no security, and 1 means all parameters
related to levels A, B, and C are always locked). Press the ▼ or ▲ keys until the desired security
code number (from 2 to 250) appears in the upper display. Press the FUNC key to lock in the value.
The upper display changes to 1 , and the lower display changes to CODE.B . This means that ONLY
Levels B and C are locked, NOT Level A. If finished remove the instrument from its case and place
both dip switch SW1 and SW2 into the OFF position to return to the operating mode; otherwise,
continue with the next step.
6.5.2 SETTING THE SECURITY CODE FOR LEVEL B
If you first set CODE.A , the lower display will read CODE.B ; if not, press the FUNC key to move to
CODE.B . The upper display shows 0 , which indicates no security; or it may show 1 , which means all
parameters related to levels A, B, and C are always locked). Press the ▼ or ▲ keys until the desired
security code number (from 251 to 500) appears in the upper display. Press the FUNC key to lock in
the value. The lower display changes to CODE.C , and the Upper display shows 1 . This means that all
levels are locked and cannot be changed. If finished, remove the instrument from its case and place
both dip switch SW1 and SW2 into the OFF position to return to the operating mode.
6.5.3 SETTING THE SECURITY CODE FOR LEVEL C
If you first set CODE.A and CODE.B , the lower display will read CODE.C . If not, press the FUNC
key to move to CODE.C . The upper display shows 0 , which indicates no security; a 1 means all
parameters related to levels A, B, and C are always locked). Press the ▼ or ▲ keys until the desired
security code number (from 501 to 1000) appears in the upper display. Press the FUNC key to lock
in the value. The upper display changes to CodE and the lower display changes to ATC . If finished,
remove the instrument from its case and place both dip switch SW1 and SW2 into the OFF position
to return to the operating mode.
Once the security codes are selected, they CANNOT be displayed. If the codes are forgotten, new
values must be entered using the above procedure. It is recommended that a code be set for each
security level. Note that unlocking the Level C code also unlocks Levels A, B, and C. To relock a
code, simply enter any incorrect number and all the locked levels will relock. Unlocking the Level B
code, unlocks Levels A and B. Unlocking Level A unlocks only Level A. When the SECUR functions
are accessed in Group 1, the levels that are locked will be followed by a decimal point
7. OPERATION
7.1 PRIMARY INPUT CALIBRATION
NOTE: In this section the word Calibration means to match the Instrument to the input device, so

Dynisco ATC770-0-2-3 Specifications

General

Brand	Dynisco
Model	ATC770-0-2-3
Category	Controller
Language	English