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Example
7.2.2 Operating rights
Valid for Integral IN and Variocool NRTL
constant temperature equipment
Example
Exclusive operating rights
7.2.3 Communication monitoring
20 / 43
Example with set point transfer of 30.5 °C to the constant temperature
equipment. In this example, the address 15 is used.
PC / control station
"A015_OUT_SP_00_30.5"CR
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As soon as a write command is sent to the device via the interface, the
interface automatically obtains the operating rights.
If another control section already has exclusive operating rights,
writing is not possible and the interface responds with error message
38 .
If you subsequently want to operate the device from a different control
section, you must first explicitly obtain the relevant operating rights.
If you wish to take over operation and operate the device using its keyboard,
you must press the softkey with the lock symbol on the device display and
confirm your entry.
If you wish to prevent any other control section from obtaining operating
rights, you have the option of using the command with the ID 34 – setting
the timeout value for communication – to secure exclusive operating rights
for the interface. The timeout setting must be greater than 0 seconds.
When the timeout is set to a value greater than 0 Ä Chapter 7.2.3
"Communication monitoring" on page 20, communication monitoring is
activated.
If the status of exclusive operating rights changes again, the timeout value
for communication monitoring must be reset to 0. Monitoring is deactivated
as a result.
Subsequently, the operating rights are no longer exclusive and another con-
trol section can obtain the operating rights, if required.
See also the chapter "Operator and viewer" in the operating manual accom-
panying your constant temperature equipment.
The write command with the ID 34 allows you to set the timeout value for
communication monitoring. If the selected value is greater than 0 seconds,
communication monitoring is activated for the interface. The timeout value
can also be set from the device menu of the interface module.
If a command is not sent via the interface for the duration of the preset
timeout, the timeout has expired and a disconnection is detected.
Interface module LRZ 926
Constant temperature equipment
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"A015_OK"CR
V1
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