External Sd Card Slot; Clear Exception Pushbutton - CTI Janus 2500C-J Series Installation And Operation Manual

2.7 External SD Card Slot

The front panel contains a receptacle for a full-size SD card. Standard (SD) and high capacity (SDHC) memory cards
may be used. This SD card is not required for controller operation, and no logic instructions will access (read or
write data) from this card. A bicolor S
•
OFF: No SD card is inserted
•
GREEN: An SD card is inserted into the receptacle but it is not being accessed by the controller firmware.
When this condition exists, the card can be removed.
•
RED: The firmware is accessing the SD card (reading or writing). When this condition exists, you should
not remove the card. Removing the card will corrupt the data on the card.
This card has three primary uses as described below:
a)
SD Card Ethernet Port Setup provides a method for the user to specify a fixed IP Address when the
controller has not been configured (i.e. on initial power-up or after configuration reset). This operation
executes only if Module Switch 2 = OPEN and Module Switch 4 = CLOSED. See SD Card Ethernet Port
Setup 3.2.9 for more information.
b)
SD Card Firmware Update provides an alternate method for firmware update when Remote Firmware
Update is not allowed or connection from Janus Workbench is inconvenient. The SD Card Firmware
Update method is initiated on startup when Module DIP Switch 2 is set to CLOSED position. See Front
Panel SD Card Firmware Update for additional information.
c)
File Operations allows you to transfer files between the internal SD card and the external SD card and/or
PC. For example, you could use this facility to backup controller system and/or application files while the
application is running. These operations can be selected via the web server File Management page.

2.8 Clear Exception Pushbutton

When enabled, the C
LEAR
configuration values to default values, or restore factory defaults without requiring access to Janus Workbench or
the controller web server. See
The recessed pushbutton will function only when Switch 3 is in the CLOSED position.
CTI Janus Programmable Automation Controller IOG
LED, mounted in the front panel indicates the following conditions:
TATUS
E pushbutton provides a direct method to clear exceptions, reset controller
XCEPTION
Section 5.3 for more information.
See Section 3.2.3 Setting the Module Switches
NOTE
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