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Modbus Protocol
User Security Block
The User Security block comprises of parameters that are essential to Logon or change
security features in PAT700.
Note: Use FC16 where '*' is indicated.
Address 400-414 (User ID) (Format: Strings)
Set the instrument's User ID to login to PAT700. The ID consists of 15 bytes of Unicode
characters.
Note: Authentication is not required to set the value for 'User ID'.
Address 415-424 (Password) (Format: Strings)
Set the instrument's Password to login to PAT700. The Password consists of 10 bytes of
Unicode characters.
Note: Authentication is not required to set the value for 'User Password'.
Address 425 (Logon / Logoff) (Format: 16 Bit Word)
Get / Set the instrument's login flag. The Logon / Logoff consist of 1 word which refers to
0 = Logoff and 1=Logon.
Note: User ID and Password should be set first before enabling the Logon flag to successfully login
to PAT700. Authentication is not required to set the value.
Address 426 (Security) (Format: 16 Bit Word)
Get / Set the instrument's Security flag. The Security consists of 1 word which refers to 0
= Disabled and 1 = Enabled.
Address 427 (Data logging) (Format: 16 Bit Word)
Get / Set the instrument's Data logging flag. The Data logging consists of 1 word which
refers to 0 = Disabled and 1 = Enabled.
Address 428-499 - Expansion
Reserved for future expansion.
User Security Block
Address Register Description Access
Size
(Words)
0400 User ID W* 15
0415 Password W* 10
0425 Logon / Logoff R/W 1
0426 Security R/W 1
0427 Data logging R/W 1
0428-0499 Future Expansion
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