36

H7CX-A

@-N

Key Protect Level

It is possible to prevent setting errors by prohibiting the use of certain operation keys by specifying the key protect level (KP-1 to KP-7) when the

key-protect switch is set to ON.

The key protect level is set in the function setting mode. The key protect indicator is lit when the key-protect switch is ON.

* Changing mode to configuration selection mode or function setting mode.

Self-diagnostic Function

The following displays will appear if an error occurs.

*1. Displays for 4-digit models are given in parentheses.

*2. This includes times when the life of the EEPROM has expired.

*3. This occurs if the present value or total count value falls below

−99999

(

−999 for 4-digit models).

*4. This occurs in the following conditions if the present value (i.e.,

measurement value) exceeds 999999 (9999 for 4-digit models).

• For Output Modes K-2, D, L, or H

• Dual counter or tachometer operation is used.

*5. Display flashes.(1-second cycles)

*6. This does not apply when tachometer operation is used.

*7. This is displayed if the alarm value setting for either of the two outputs is

exceeded if a model with two outputs is used.The total ON count will not be

cleared by using the Reset Key.

*8. The normal display and

e3 will appear alternately.

When the Reset Key is pressed,

e3 will not be displayed even if the alarm

set value is exceeded.

(Monitoring is possible, however, because the counter will continue without

the output ON count being cleared.)

Level

Description

Details

Changing modes*

Switching display

during operation

Reset Key

Up/Down Keys

KP-1

(default setting)

Invalid

Valid

Valid

Valid

KP-2

Invalid

Valid

Invalid

Valid

KP-3

Invalid

Valid

Valid

Invalid

KP-4

Invalid

Valid

Invalid

Invalid

KP-5

Invalid

Invalid

Invalid

Invalid

KP-6

Invalid

Invalid

Valid

Valid

KP-7

Invalid

Invalid

Invalid

Valid

*Factory-set to OFF

ON

(Enable)

OFF

(Disable)

*

Key protect indicator

Main display

Sub-display

Description

Output status

Correction method

Set value after reset

No change

Present value underflow*3

No change

Either press the Reset Key or turn

ON reset input.

No change

No change

Present value overflow*4

No change

Either press the Reset Key or turn

ON reset input.*6

No change

e1

Not lit

CPU error

OFF

Either press the Reset Key or

reset the power supply.

No change

e2

Not lit

Memory error (RAM)

OFF

Turn ON the power again.

No change

e2

sum

Memory error (EEPROM)*2

OFF

Reset Key

Factory setting

e3*8

No change

Output Counter Overflow

No change

Reset Key*7

No change