GE EPM 9650/9800 manual New Password a New Password B

Password Lock (65326): This Register is used to report the Locked Port and change the Locked Port for Password Modification.

Writing a value of 0x00000 to this Register requests locking Password Updates to this port and locking out Password Updates to other ports. Writing a value other than 0x00000 rescinds the Lock on this port. Reading this Register returns the following enumeration:

0x00000 = Port A, I/O

0x00001 = Port B

0x00002 = Port C

0x00003 = Port D, 232 or 485

0x00004 = Diagnostic Port

Anything else indicates that no port has locked Password Updates yet.

Password Sequence / Status (65327): The High Order Byte of this Register contains a Sequence Number which increments with every password command received.

The Low Order Byte of this Register contains an enumeration that reports the status of the last password command received. The enumeration is as follows:

0x000 Fail

0x001 Pass

0x002 Unfinished

Password Command (65328): This Register contains and enumeration that tells the device what action to take. The enumeration is as follows:

0x00000	Set Level 1 Password
0x00001	Set Level 2 Password
0x00002	Enable Password Protection
0x00003	Disable Password Protection
0x00004	Enable Sealing Switch Protection
0x00005	Disable Sealing Switch Protection
0x00006- 0x0FFFF	Revoke the 2-minute timer of an active password.

All successful commands set access back to Level 0, revoking the 2-minute timer of any active password.

New Password A (65332-65336)

New Password B (65340-65344)

The user writes to these Registers in order to set the Level 1 or Level 2 Password. For security purposes, these Registers are READ ONLY. The same password should be written to both sets of Registers; a new password will be accepted only if the values written to both sets of Registers agree. After writing to both sets of Registers, the Password Command Register should be written with the command indicating which Password is being updated.

Acceptable Passwords should consist of the ASCII characters ‘ ‘ (0x020), ‘0’-’9’ (0x030-0x039) and ‘A’-’Z’ (0x041-0x05A). Attempts to set a password with illegal characters will fail.

8-35