AUSGABE AB 6DS1222-8BA Siemens Teleperm Bus Connection

 ·        Siemens 6DS1222-8BA N-AT Interface Module The N–AT 

local bus interface permits the OS 525 to be connected to the 20–meter 

local bus of the CS 275 bus system.

·        The OS 525 software executes in one of these computers and 

employs the computers connected to the terminal bus as additional 

operator positions. The computer that contains the OS 525 software 

is known as the base unit (host computer).

·        The OS 525 software has been installed on the hard disk of the

 host computer. The terminals connected merely contain the OS 

terminal software. The OS terminal software consists of the 

EASYS I/O system of the OS 525 software.

·        Process control data (on line form, .OSO file) created by 

configuration and on line setting is not specific to an operator position. 

This means that it does not possess any information that is related to

 the device configuration used during process control.

·         All operator positions of each host work on the same on line form.

·        The device configuration used in process control is set in the OS–SET configuration tool (cf. Section 3.1.6. in this Manual).

·        When process control starts, the configured start screen is 

displayed at all configured and connected operator positions. 

Afterwards, each operator position permits independent operator input.

·        The measured–value and message archives are updated when 

starting a redundant OS (cf. Section 3.3 in SUPERVISOR 

C79000–G8076–C524).