6 Installation and commissioning
46 5831400/02 EN
Modbus RTU
We recommend a shielded twisted pair cable. A shielded twisted pair cable
is recommended. To optimize the number of cables and the cable glands, it
may be advantageous to run Modbus and the 24V supply in the same ca-
ble.
Connect the shield to the Modbus master (e.g. in the control cabinet) and
route it to the device without interruption. We recommend EMC cable glands
for shielding the device.
Analog output
We recommend a shielded cable.
Connect the shield in the control cabinet and route it to the device without in-
terruption. We recommend EMC cable glands for shielding the device.
6.4.2 Removing the bayonet seal ring
Before connecting, setting or testing the pointer thermometer, the bayonet
seal ring must be removed.
► Turn the bayonet seal ring counter-clockwise to the stop.
Figure22: Removing the bayonet seal ring
► Lift off the bayonet seal ring along with the viewing glass and rubber gas-
ket and place them safely on a clean, even storage surface.