Nmea0183 Device Connection To Rs485(4W) Modbus-Rtu Bus; Nmea0183 Device Connection To Rs485(2W) Modbus-Rtu Bus - CEL-MAR ADA-4040PC6 User Manual

ADA-4040PC6

3.3.1. NMEA0183 DEVICE CONNECTION TO RS485(4W) MODBUS-RTU BUS.

RS485 / RS422
connector
Tx+/ A
Rt
Tx-/ B
Rx+
Rt
Rx-
GND
MASTER
MODBUS-RTU
DEVICE
Fig 5. Example connection of ADA-4040PC6 to RS485(4W) 4-wire bus and FURUNO* GP-150 (NMEA0183).

3.3.2. NMEA0183 DEVICE CONNECTION TO RS485(2W) MODBUS-RTU BUS.

RS485 / RS422
connector
Tx+/ A
Rt
Tx-/ B
Rx+
Rt
Rx-
GND
MASTER
MODBUS-RTU
DEVICE
Fig 6. Example connection of ADA-4040PC6 to RS485(2W) 2-wire bus and FURUNO* GP-150 (NMEA0183).
RS485(4W) BUS
19200Bd/8/N/1
MODBUS-RTU
SLAVE-1
MODBUS-RTU
RS485(2W) BUS
19200Bd/8/N/1
MODBUS-RTU
SLAVE-1
MODBUS-RTU
6
SLAVE-2
MODBUS-RTU
RS422(4W)
4800Bd/8/N/1
SLAVE-2
MODBUS-RTU
RS422(4W)
4800Bd/8/N/1
GPS NAVIGATOR
FURUNO GP-150
NMEA 0183
GPS NAVIGATOR
FURUNO GP-150
NMEA 0183