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13 Operation, maintenance and care
13.2.1
Sensor replacement while the digiLine mode is active
Disconnection and reconnection of sensors with JUMO digiLine electronics while the JUMO digiLine bus is
active
If sensors with JUMO digiLine electronics are disconnected from the JUMO digiLine bus for cleaning or
calibration while the system is operating and then reconnected with no changes to the interface config-
uration, the JUMO AQUIS touch S/P detects the sensors again and links them automatically. The sen-
sors then resume service automatically.
Replacement of sensors with JUMO digiLine electronics while the JUMO digiLine bus is active
If an individual sensor with JUMO digiLine electronics is replaced with a new sensor of the same kind,
it is linked automatically and assigned in the JUMO AQUIS touch S/P to the previous function of the re-
moved sensor. When several sensors are being replaced, it is necessary to ensure that multiple sensors
with JUMO digiLine electronics are not disconnected from the bus at the same time. If several sensors
with JUMO digiLine electronics are disconnected from a JUMO digiLine bus, the individual replacement
electronics may not be linked automatically and renewed assignment to inputs for digital sensors is re-
quired for each new JUMO digiLine electronics. It is therefore advisable to replace sensors with JUMO
digiLine electronics in succession.
When replacing sensors with JUMO digiLine electronics, proceed as follows:
1. Disconnect a single JUMO digiLine electronics from the bus.
NOTE!
Ensure that, besides the JUMO digiLine electronics to be replaced, no others are disconnected from the
bus until the JUMO digiLine electronics of the replacement sensor have been connected and put into
service. This could lead to problems with the automatic linking of the new JUMO digiLine electronics in
the JUMO AQUIS touch S/P.
2. Connect the JUMO digiLine electronics of the replacement sensor.
3. If the old and replacement electronics are identical in terms of sensor type, the JUMO AQUIS touch
S/P can automatically assign the previous function of the old sensor to the replacement electronics
and link it automatically.
4. Check on the JUMO AQUIS touch S/P whether the new JUMO digiLine electronics of the new sensor
has been linked and resumed service. The procedure is described in the operating manual and in-
stallation instructions of the JUMO AQUIS touch S/P.
When several sensors with JUMO digiLine electronics need to be replaced, follow this procedure for
each individual sensor separately.
NOTE!
The terms "Linking" and "Sensor scan" mentioned here are steps in the startup of JUMO digiLine elec-
tronics. For a more detailed explanation, see chapter 8 "Startup", page 45
13.2.2
Sensor replacement while the Modbus mode is active
Disconnection and reconnection of sensors with JUMO digiLine electronics while the Modbus mode is active
If sensors with JUMO digiLine electronics are disconnected from the Modbus system for cleaning or cal-
ibration while the system is operating and then reconnected, always ensure that the interface configura-
tion was not changed. In contrast to JUMO digiLine, Modbus does not support plug & play and cannot
configure the interface automatically. It is also necessary to ensure that the user is in possession of all
parameters that can be written over the Modbus. The automatic linking and installation available with
JUMO digiLine do not exist here. A detailed description of the Modbus functionality of JUMO digiLine
electronics can be found in the description of its Modbus.
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