User Manual

Siemens Building Technologies CM2N8884E / 10.1999
Landis & Staefa Division 5/6
Local operation and display primarily is used for autonomous process stations. It
comprises the following functions:
•
Indicating operating and error statuses
•
Changing setpoints, timeswitch entries, etc.
•
Printing alarms and reports
The illustration below shows the involved interfaces and devices:
TTY1/TTY2
TTY3
8884Z05E
Process level
Room level
The interfaces and devices for local operation and display are:
Interface Unit
POP Cards The integrated card reader and the 12-line display and key field allows
for operating the building services systems at the BPS.
Note:
The plant-specific POP Cards must be ordered separately.
TTY1/TTY2 The two V.24 interfaces at communication card COM1 enable
connection of a local printer and terminal.
Notes:
– Order the associated COM1 card separately
– For dial-up communication, TTY1 is reserved for the modem
– TTY1/TTY2 are also used to connect third-party systems
TTY3 The tool plug at the front of the BPS allows for connecting a PC with
VISOTOOL Editor for subsequent operation, program download and
editing.
Local operation is not restricted to just the autonomous VISONIK BPS. It is possible
also in process stations which
– are connected to a VISONIK Data and Communication Server or
– are integrated in an SDLC ring of an Enhanced Communication Unit (ECU).
The BPS has 3 hierarchical access levels with separate passwords for each level. This
prevents unauthorised access to the processes.
Refer to the following documents for more information on operation:
Document no. Title
CM2N8885E BPS operation and display, function sheet
CM2B8301E Building Process Station BPS, operating instructions
Local operation
and display
Functions
Interfaces and devices
Explanations
(illustration)
Local operation at the
subsystem
Access protection
Additional information