In-Service Test Mode - Landis+Gyr E470 Series User Manual

Credit mode
Service menu
In-service test (IST)
display
HAN Join/Unjoin
Display security log
Exit Menu Exit Menu
30 second timeout from last button press –
returns display to Total active import display

14.12.1 In-Service test mode

D000058620 en a – E470 Series 3 SMETS2 100 mm – ZCX310 – User Manual and Functional Description
B B
IST display
already
activated?
A A
B B
HAN Joined?
A A
B B
Security Log entry
A A A A
B B
A A
Press button briefly (t < 2 s)
Press button longer (t ≥ 2 s)
Figure 27 Service menu
The In-Service Test (IST) mode is accessible by selecting the B button from
the service menu. The user can then select the B button to enable the IST
mode. In IST mode the meter registers are displayed with 4 digits to the left
and 3 digits to the right of the decimal point. This mode allows for
calibration of the meter using less energy than would be possible using the
normal display resolution. The IST mode is active for 4 hours.
enabled, IST will remain in force for 4 hours, even though the service menu
will be exited after 5 minutes of no user interaction. Should the meter be
power cycled during the 4 hour period that IST is in operation, then on
power up, the meter will 'remember' that IST was in operation at the point of
power down, so will reinstate
will begin from the point of power up, not from the point when it was
originally enabled.
Issue 1.2
no
Enter IST mode
A=no, B=yes
A A
yes
Exit IST mode
A=no, B=yes
A A
no
Join HAN?
A=no, B=yes
A A
yes
Leave HAN?
A=no, B=yes
A A
A A
last
To total active import display
it. However, the 4 hour IST timeout duration
B B
IST mode
3 seconds
(2 decimal points)
B B
IST mode ended 3 seconds
B B
Join Progress/
3 seconds
Result
B B
Leave Progress/
3 seconds
Result
Therefore, if
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