An Operator is logged in and another operating unit requests Operator privi-
“Requesting Operator privileges” on page 118). The first Operator
becomes a Viewer after this Operator requests Operator privileges.
If an Operator is downgraded to Viewer, a pop-up window appears with a
corresponding message.
The Master automatically becomes an Operator if a detachable control
element with Operator privileges is removed.
Exception: A Command Touch with restricted user privileges. In this case, an
error is first generated by the constant temperature equipment. The Master
becomes the Operator again after it has been restarted (without Command).
The connection to the control station is actively monitored in the set
delivery condition. If no command is received by the device via Ethernet
for more than 15 seconds, an interruption of communication is detected. If
connection to the control station is interrupted, the constant temperature
equipment reacts according to the configuration
Mode safety fittings” on page 123.
The timeout can be set from one to 600 seconds. Use the command
[OUT_SP_08_XX] via the interface for this purpose.
The function can also be executed for the Ethernet interface via the
Setup
Basic setup
Ethernet
Services
PC control
PC Timeout
menu. This
must be set before the start of communication.
If the monitoring of the control station is active, the Operator privileges are
owned exclusively by the control station.
Neither Master, Command nor Web server can obtain Operator privileges.
Operation on the constant temperature equipment is therefore locked. If a
timeout occurs during monitoring, the Operator privileges can be automati-
cally transferred to the constant temperature equipment.
A timeout value of 0 must be set to deactivate the monitoring of the
connection. The constant temperature equipment can be operated from the
control station/PC or on the constant temperature equipment itself. The
Operator privileges can be obtained on an alternating basis. In this case,
there is no monitoring of the communication and a connection interruption
is not detected.
The control station obtains Operator privileges for each write
command of the control station, provided that the Operator priv-
ileges are not locked by another control element. If the control
station sends write commands very frequently, operation can be
made more difficult for another control element.
The Master returns to the previous login level after the device has been
switched off and on again. The same applies to the Command control ele-
ment and the Web server.
An exception to this is the situation where the operating unit which last
requested the Operator privileges is not connected. In this case, the
Operator privileges automatically return to the Master when the device is
switched on.
Control station
Cold start
V6
Integral Process Thermostats and High-Temperature Thermostats
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