Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual de usuario descargar pdf (Pagina 93)

8 ● Supplementary Information

●

*.*.*.*, DISALLOW 192.168.100.*, ALLOW

allows connections only from TCP/IP addresses starting with 192.168.100.

FactoryTalk Historian Trusts

A FactoryTalk Historian trust allows clients to connect to a FactoryTalk

Historian server machine and retrieve data without explicit user login. A

trust may instead allow a user to log in based on an IP address, Windows

domain, user name, application or other criteria.

FactoryTalk Historian trusts are established on the FactoryTalk Historian

server and stored in a trust database.

Point Access Permissions

FactoryTalk Historian DataLink prompts the user for a user name and

password upon connection to a FactoryTalk Historian server. The user

name is used in conjunction with the PtOwner, PtAccess, DataOwner, and

DataAccess fields.

For example, if the sinusoid tag is configured with PtAccess

O:RW, G:NONE, W:NONE, and PtOwner is user1, a user must log

in as user1 in order to access the tag. Otherwise, the tag cannot be

found.

If sinusoid DataAccess is O:R, G:NONE, W:NONE, and

DataOwner is user1, a user must log in as user1 in order to see

sinusoid tag data. Otherwise, a read access error message is returned.

However, the same user may not write data to sinusoid because the

DataAccess attribute is O:R (read only). The FactoryTalk Historian

System Manager would need to change DataAccess to O:RW (read and

write) to enable a user logging in as user1 to read and write data to

sinusoid.

1 2 ... 88 89 90 91 92 93 94 95 96 97 98 ... 163 164

Sin comentarios

Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual de usuario Pagina 93