Omron CX-PROGRAMMER V9 - REV 12-2009 Operation Manual page 194

PART 1: CX-Programmer
CHAPTER 4 – Reference
PLC Information
The PLC Information dialog displays information associated with the PLC device, including:
♦ Device type;
♦ Program memory (usable/size and whether protected);
♦ Memory type;
♦ File/memory card presence;
♦ Data memory size;
♦ Extension memory size;
♦ IO memory size;
♦ Timers/counters memory size.
Note:
To access the PLC Information dialog, select Information from the PLC menu. Select the Close pushbutton to
exit the PLC Information dialog. (Note that the PLC must be on line).
Setting the PLC's Clock
When a PLC is on-line, its clock (if it has one) can be synchronized to the computer clock or the PLC clock can
be set to a specific time.
Use the following procedure to set the PLC's clock.
1, 2, 3...
Refer to the CX-Server PLC Tools User Manual for further information on setting the PLC clock.
Applying a Password to the PLC
The C-series PLCs and CS/CJ/CP-series PLCs support use of a single password to protect an individual PLC.
The CV-series PLC supports two passwords that provide either system (overall) or partial protection (protecting
specific programs on a PLC). For password information relating to a specific PLC, refer to that PLC's user
manual.
When enabled, the password is required every time the protected program or PLC is accessed.
The password can be released if necessary, for example, if a new PLC is being created and details need to be
uploaded from a protected PLC/program to be copied into the new PLC.
Use the following procedure to apply a password to the PLC. This facility is only available when the PLC is on-
line. Note that for the C-Series PLCs this is done via FUN(49) and after the program is protected, select
Protection Write Protect from the Transfer menu to set and release the protect.
1, 2, 3...
CX-Programmer _Page 114
Different PLC devices are capable of reporting different types of information.
1. Select the PLC object in the project workspace to display the Ladder program in the
Diagram Workspace.
2. Select the Work On-line button from the toolbar. A confirmation message is displayed;
select the Yes pushbutton to connect to the PLC.
3. If the PLC has a clock, the project workspace will show a PLC Clock icon. Double-click
this to show the CX-Server clock dialog.
1. Select the PLC object in the project workspace.
2. Select the Show Properties button from the toolbar. The PLC Properties dialog is
displayed.
3. Display the Protection tab of the PLC Properties dialog.
4. Enter a password; this has a maximum of eight characters for CS/CJ/CP-series PLCs or
entered as an operand of FUN(49) instruction.
5. To release the password, delete the entry from this field.
6. Select the Close button from the title bar to close the dialog.
7. Select the Set Password button from the toolbar to enable protection for the PLC. The Set
Program Protection dialog is displayed. Select the items to apply protection to in the Items
to Set field. Select the OK pushbutton to accept the settings or select the Cancel
pushbutton to abort the operation.
8. Select the Release Password button from the toolbar to disable protection for the PLC.
The Release Program Protection dialog is displayed. Select the items to release protection
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