Siemens SINUMERIK Series Function Manual page 72

B3: Distributed systems - 840D sl only
2.1 Brief description
Quantity structure
The following quantity structure must be observed for an operator control and monitoring
system T:1:N:
T: Thin Client Unit (TCU) or HT8 handheld unit
The graphic information of the PCU 50.x user interface is transferred via the TCU to the
operator panel front (OP) and displayed there. TCU and operator panel front together form
an operator station.
● Maximum number
● Online
● Operating focus
● HT8 handheld unit
M: PCU 50.x with SINUMERIK Operate
Several operator stations and several NCU 7x0.3 PN can be connected to a PCU 50.x with
SINUMERIK Operate user interface. The data of the channels of different NCUs can be
displayed on the operator stations through suitable configuring of the channel menu.
Note
Currently, only one PCU per T:1:N network can be configured ⇒ M = 1
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In principle, any number of operator stations, only limited by the amount of available
address space, can be operated in the system network.
A maximum of four operator stations per PCU can be online simultaneously.
At any one time, only one of the operator stations on the PCU that are online, can have
the operating focus. Entries with regard to the user interface can only be made via this
operator station. The user interfaces on the other online operator stations are darkened to
indicate that they do not have operating focus. Only a message is displayed on operator
stations that are not online.
The operating focus can be switched between the online operator stations.
A HT8 handheld unit combines a TCU, an operator panel front and a machine control
panel in a single device.
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions