Rockwell Automation 1756-L7x GuardLogix 5570 Controllers - Manual (Page 113)

Rockwell Automation Publication 1756-UM022A-EN-P - November 2012 113
Store and Load Projects Using Nonvolatile Memory Chapter 8
2. Leave the ESM on the controller until the OK status indicator is off.
3. If necessary, remove the ESM from the controller after the OK status
indicator transitions from solid red to off.
Clear the Program from On-board NVS Memory
If your application allows it, follow these steps to clear the program from the
controller’s on-board NVS memory.
1. Remove the ESM from the controller.
2. Remove power from the controller by turning off power to the chassis
while the controller is installed in the chassis, or by removing the controller
from a powered chassis.
3. Reinstall the ESM into the controller.
4. Restore power to the controller.
a. If the controller is already installed in the chassis, turn power to the
chassis back on.
b. If the controller is not installed into the chassis, reinstall the controller
into the chassis and turn chassis power back on.
Estimate the ESM Support of
the WallClockTime The ESM provides support for the maintenance of the WallClockTime attribute
of the controller when power is not applied. Use this table to estimate the hold-up
time of the ESM, based on the temperature of the controller and installed ESM.
Manage Firmware with
Firmware Supervisor You can use the Firmware Supervisor feature to manage firmware on controllers.
Firmware Supervisor lets controllers automatically update devices:
• Local and remote modules can be updated while in Program or Run
modes.
• Electronic keying must be configured for Exact Match.
• The firmware kit for the target device must reside on the controller’s
memory card.
• The device must support firmware upgrades via ControlFLASH software.
Table 37 - Temperature vs. Hold-up Time
Hold-up Time (in days)
Temperature 1756-ESMCAP(XT) 1756-ESMNRM(XT)
1756-SPESMNRM(XT) 1756-ESMNSE(XT)
1756-SPESMNSE(XT)
20 °C (68 °F) 12 12 0
40 °C (104 °F) 10 10 0
60 °C (140 °F) 7 7 0