Datem Neptune 5000 - Page 46

Technical Manual
46
Commands sent from the Topside PC are received and decoded by the Subsea
Microcontroller. It then performs the required functions and returns any data
explicit to the command.
The Subsea Microcontroller board has 4 plugs to mate to the Connector PCB.
They are:
PL1 – Power In
PL2 – Inputs / Outputs (Telemetry data, Frame Tilt data, Altimeter data,
Penetration, Cone Up, Neptune 3000 Inverter Status)
PL3 – Cone Power, Cone Data, Cone Comms, and Pressure Sensor
PL4 – Inverter Control via digital (Neptune 5000) or analogue (Neptune 3000)
Specification
Supply Input:
+ 12VDC
Supply Current:
200mA
Processor:
AT90CAN128
SRAM:
4K Bytes
Flash:
128K Bytes
EEPROM:
4K Bytes
Clock Speed
7.3728 MHz
LED Indicators
The Microcontroller has 20 LEDS situated on the PCB to indicate correct board
system operation. Error! Reference source not found. below shows the
Microcontroller Board Layout. The on board LEDs are designated as follows:
LED
NUMBER
LED
COLOUR
LED LABEL
LED DESIGNATION
1
GREEN
+12V B
+12V Board Supply
2
GREEN
+5V B
Regulated +5V Board
3
GREEN
-
15V C
-
15V Cone Supply
4
GREEN
+15V C
+15V Cone Supply
5
GREEN
+5V C
Regulated +5V Cone
6
ORANGE
Tx0
RS232 Telemetry Comms (to
PC)
7
ORANGE
Rx0
RS232 Telemetry Comms (from PC)
8
ORANGE
Tx1
RS232 Frame Tilt Comms (if fitted)
9
ORANGE
Rx1
RS232 Frame Tilt Comms (if fitted)
10
ORANGE
Tx2
RS232 Altimeter Comms (if fitted)
11
ORANGE
Rx2
RS232 Altimeter Comms (if fitted)
12
WHITE
CONE UP
Cone Up (ON)
13
BLUE
ADC
ADC operation (ON)
14
ORANGE
Tx3
RS485 Cone Comms
15
ORANGE
Rx3
RS485 Cone Comms