Slave ID 10
Baud Rate 115200
Tx Packets 1562
Rx Packets 1562
Exception Packets 3
This section is included to give information about the currently selected serial port and external modem (if
connected).
The items displayed on this page will change depending upon configuration of the module. You are referred to
your system supplier for further details.
NOTE:- Factory Default settings are for the RS485 port to operating at 19200 baud, modbus slave
address 10.
Module RS485 port configured for connection to a modbus master.
The modules operate as a modbus RTU slave device.
In a modbus system, there can be only one Master, typically a PLC, HMI
system or PC SCADA system.
This master requests for information from the modbus slave (The module) and may (in control systems) also send
request to change operating modes etc. Unless the Master makes a request, the slave is ‘quiet’ on the data link.
The factory settings are for the module to communicate at 19200 baud, modbus slave address 10.
The DSE Modbus Gencomm document containing register mappings inside the DSE module is available upon
request from support@deepseaplc.com. Email your request along with the serial number of your DSE module to
ensure the correct information is sent to you.
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)
Shutdown=(ReadRegister(10,0306,1) >> 12) & 1)
: reads (hex) 0306 and looks at bit 13 (shutdown alarm present)
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).
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