DEEP SEA ELECTRONICS DSE8610 MKII Operator's Manual page 127

RS485 MODBUS RTU Diagnostics
RS485 MODBUS RTU diagnostic screens are included; press the Scroll Down
viewing the RS485 Serial Port instruments to cycle to the available screens. If experiencing RS485
MODBUS RTU communication problems, this information aids troubleshooting.
RS485 Port 1
Link Quality
RX Rate
Lost Rate
Typical Requests (Using Pseudo Code)
BatteryVoltage=ReadRegister(10,0405,1): reads register (hex) 0405 as a single register (battery
volts) from slave address 10.
WriteRegister(10,1008,2,35701, 65535-35701): Puts the module into AUTO mode by writing to
(hex) register 1008, the values 35701 (auto mode) and register 1009 the value 65535-35701 (the
bitwise opposite of auto mode)
Warning=(ReadRegister(10,0306,1) >> 11) & 1): reads (hex) 0306 and looks at bit 12 (Warning
alarm present)
ElectricalTrip=(ReadRegister(10,0306,1) >> 10) & 1): reads (hex) 0306 and looks at bit 11
(Electrical Trip alarm present)
ControlMode=ReadRegister(10,0304,2): reads (hex) register 0304 (control mode).
Description of Controls
Shows the state of the RS485 communication lines.
50 %
These can help diagnose connection problems.
25
25
Link Quality: The quality of the RS485 connection
RX Rate: The number of received message during the
packet timeout
Lost Rate: The number of messages that are discarded
(invalid messages)
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button when
057-254 ISSUE: 10