Honeywell ENCAL 3000 Hardware Manual page 68

Serial ModBus connection
The Serial ModBus connection is used
for connection with Serial ModBus
clients like for example Flow Computers.
The EnCal features 2 Serial ModBus ports
with identical output. They are both
independently configurable for RS232
or RS485 communication through link
settings LK1-3 and LK4-6
(see pictures below for location, wiring
scheme and link settings).
Figure 6.18: Location of Serial ModBus connector (J8)
Figure 6.19: Modbus Connection and Link settings
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