GE P24DM, Technical Manual

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4.2.2 PASSWORD RULES
● Default passwords are blank for Level 1 and are AAAA for Levels 2 and 3
●
Passwords may be any length between 0 and 8 characters long
● Passwords may or may not be NERC compliant
●
Passwords may contain any ASCII character in the range ASCII code 33 (21 Hex) to ASCII code 122 (7A Hex)
inclusive
● Only one password is required for all the IED interfaces
4.2.3 ACCESS LEVEL DDBS
In addition to having the 'Access level' cell in the 'System data' column (address 00D0), the current level of access
for each interface is also available for use in the Programming Scheme Logic (PSL) by mapping to these Digital
Data Bus (DDB) signals:
● HMI Access Lvl 1
●
HMI Access Lvl 2
● HMI Access Lvl 3
●
FPort AccessLvl1
● FPort AccessLvl2
●
FPort AccessLvl3
● RPrt1 AccessLvl1
●
RPrt1 AccessLvl2
● RPrt1 AccessLvl3
●
RPrt2 AccessLvl1
● RPrt2 AccessLvl2
●
RPrt2 AccessLvl3
Key:
HMI = Human Machine Interface
FPort = Front Port
RPrt = Rear Port
Lvl = Level
4.3 ENHANCED PASSWORD SECURITY
Cyber-security requires strong passwords and validation for NERC compliance.
4.3.1 PASSWORD STRENGTHENING
NERC compliant passwords have the following requirements:
●
At least one upper-case alpha character
● At least one lower-case alpha character
●
At least one numeric character
● At least one special character (%,$...)
●
At least six characters long
Chapter 17 - Cyber-Security P24xM
374 P24xM-TM-EN-2.1