SubVIS Orca II - User Manual
IMENCO AS
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Kophaug 3, 5570 Aksdal, Norway
Office: +47 52 86 41 00
Org No: 923 005 749 MVA
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13
3.4.1.2
Peripherals (optional)
Name
Pin No Name
Pin No
RS232 RxD
J13-1
RS485 TxD-N (B)
J14-1
RS232 TxD
J13-2
RS485 TxD-P (A)
J14-2
RS232 CTS#
J13-3
RS485 RxD-N (B)
J14-3
RS232 RTS#
J13-4
RS485 RxD-P (A)
J14-4
GPIO IN (5V)
J13-5
GPIO OUT (5V)
J14-5
ISO GND
J13-6
ISO GND
J14-6
Table 3, Isolated RS232, RS485, GPIO
Table 3 includes some interfaces that all are galvanic isolated from the rest of the camera
electronics. All these share the same isolated ground which is present at two of the terminals.
The Orca II camera software includes HTTP APIs to read /write data over these interfaces. The RS232
and RS485 interfaces are however not used to control the Orca II camera functions.
Installation of the GPIO, RS232 and RS485 interfaces, if included in the Orca II camera subsea
connector, must be carried out by qualified personnel to avoid unreliable communication or
equipment failure.
3.4.2
GPIO
The two General Purpose Input/Output (GPIO) terminals operate at
levels nominally 5V or 0V with reference to ISO GND (digital ports that
are translated to logical high or low). The figure to the right shows the
output driver circuit of the GPIO Output.
A 1.69 k Ohm pull-up resistor limits the output current.
3.4.3
RS232
The RS232 interface includes the signals RxD, TxD, RTS# and CTS# all referenced to ISO GND.
3.4.4
RS485
The RS485 interfaces include two Intersil® ISL3159E transceivers which enable the camera for either
Full duplex or Half duplex modes.