YOKOGAWA YS1000 Series, User Manual

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2.2 Security Function
2.2.1 Inhibiting/Enabling Parameter Change
Description
Setpoints for the tuning parameters or engineering parameters can be locked to prevent
them from being inadvertently changed. When they are locked, the parameter setting
increase key [ ] and decrease key [ ]displays are erased from each setting display.
The password for locking them is a 4-digit numeral, which is not set at factory shipment.
When the password is not set or is cleared, [SET PASSWORD] and [UNLOCK] are
displayed. When the password is set, [ENT PASSWORD] and [LOCK] are displayed.
Software key function
The software key function enables the front panel’s operation keys to function as keys
displayed on the LCD display.
• [SET] software key: Password setting key
Press this key to set a password.
• [ENT] software key: Password entry/cancellation key
Press this key to cancel the password setting.
• [→] key: Cursor movement key
Moves the cursor position to the right when setting or entering a password.
• [ ] software key: Number increase key
Increases numbers. Numbers change from 0 to 9 cyclically.
• [ ] software key: Number decrease key
Decreases numbers. Numbers change from 0 to 9 cyclically.
Operating the Password Setting Display
1. Setting a password (setting a password to prevent parameter changes)
(1) Open the Password Setting Display. [SET PASSWORD] and [UNLOCK] are
displayed.
(2) Press the [SET] software key. This causes the password [0000] to appear.
(3) Using the [→] software key (digit movement) and the [
] (increase) or [ ]
(decrease) software keys, set the password.
(4) Press the [SET] software key. This changes the password background color.
(5) Press the [SET] software key again. This erases the password, causing [ENT
PASSWORD] and [LOCK] to appear. At the instant the password is set, the [SET]
software key display is erased, replaced by the [ENT] software key instead.
2. Entering/canceling a password (entering a password to the instrument to which the
password has been set, to enable parameter changes)
(1) Open the Password Setting Display. [ENT PASSWORD] and [LOCK] are displayed.
(2) Press the [ENT] software key. This causes the password [0000] to appear.
(3) Using the [→] software key (digit movement) and the [
] (increase) or [ ]
(decrease) software keys, enter the password that has been set.
(4) Press the [ENT] software key. This changes the password background color.
(5) Press the [ENT] software key again. This erases the password if the password
entered agrees with the one that was set, causing [SET PASSWORD] and [UNLOCK]
to appear. This brings about a status allowing parameters to be changed. If the
password entered does not agree with the one that has been set, return to step (3).