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Figure 2-5
Multidrop configuration in hazardous area
NOTICE
Flameproof conduit seals
Two flameproof conduit seals are required for each device in hazardous area installations.
NOTICE
Equipment approved for hazardous areas
Ensure that the equipment is approved for installation in hazardous areas.
2.3
System wiring
The device is slave in a 2-wire Modbus RTU RS 485 bus system. Terminal A on the device
must be connected to terminal A on the master/host system. Terminal B on the device must
be connected to terminal B on the master/host system. This corresponds to a half-duplex
communication where the slave will only reply to a request from the master.
This example shows an EMC shielded enclosure for multidrop installation. Cable shield must
be grounded at host system, in connection box, and at flowmeter to comply with EMC
requirements. Keep the cable shield to the ground as short as possible.
Communication
2.3 System wiring
FCT030 Modbus (From firmware 4.0)
12
Function Manual, 06/2018, A5E39931813-AB
Содержание SITRANS F Coriolis FCT030
Страница 6: ...Table of contents FCT030 Modbus From firmware 4 0 6 Function Manual 06 2018 A5E39931813 AB ...
Страница 16: ...Communication 2 4 Connecting FCT030 Modbus From firmware 4 0 16 Function Manual 06 2018 A5E39931813 AB ...
Страница 194: ...Definitions A 1 Definitions FCT030 Modbus From firmware 4 0 194 Function Manual 06 2018 A5E39931813 AB ...
Страница 198: ...Index FCT030 Modbus From firmware 4 0 198 Function Manual 06 2018 A5E39931813 AB ...