5: S
PECIAL
F
UNCTIONS
5-62
FC5A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y-B1268
Special Internal Relays for HMI Module
Two special internal relays are provided protect the HMI operation.
Internal Relay
Name
Description
M8011
HMI Write Prohibit Flag
When M8011 is turned on, the HMI module is disabled from writing data to
prevent unauthorized modifications, such as direct set/reset, changing timer/
counter preset values, and entering data into data registers.
M8012
HMI Operation Prohibit Flag
When M8012 is turned on, the HMI module is disabled from all operations,
reducing the scan time. To turn off M8012, power down and up the CPU, or use
the Point Write on WindLDR.
Selection of HMI Module Initial Screen
D8068 can be used to select the initial screen display of the HMI module when the CPU module is powered up.
Data Register
Value
Description
D8068
0, 2 through 65535
Mode 1: Indicates the PLC program version each time the PLC is powered up.
1
Mode 2: Indicates the same menu as when the PLC was shut down.
When a keep data error occurs, mode 1 is enabled regardless of the value stored in data register D8068.
Key Operation for Selecting device address
When the
OK
button is pressed while a menu screen is shown, the screen switches to the control screen of the menu. For
example, while the timer menu is on the display, pressing the
OK
button switches the screen to the timer control screen,
where device addresses and values are selected. For operation examples, see the following pages.
OK
Switches to the control screen.
Slow Flashing
ESC
Discards the changes and
returns to the menu screen.
Shifts up one digit.
Decrements the number.
Shifts down one digit.
Increments the number.
OK
Saves the changes and goes to the next screen.
Fast Flashing
OK
Selects the digit and changes to fast flashing.
ESC
Returns to slow flashing.
ESC
Returns to fast flashing.
Timer Menu
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
