5
IND100084-15
Introduction
This document defines the electrical interface, serial data format, and communication protocols of the Communication
Control Interface (SCOM). The purpose of this interface is to enable a computer application to control one or more
units. Units refer to either displays (Maritime Multi Display - MMD, Interface configuration done within OSD Menu) or
panel computers (Maritime Multi Computer - MMC, Interface configuration done via VCOM and/or BIOS).
Serial Interface Configuration
The serial interface can have different configurations which are defined as follows:
RS-232
One computer controls one unit, no individual address
4-wire RS-485/RS-422
One computer controls other units, each with individual address.
2-wire RS-485
One computer controls other units, each with individual address.
Ethernet Interface Configuration
The Ethernet/LAN/Network interface configuration are defined as follows:
Ethernet
One computer controls units via Automatic IP or Fixed IP through port 10001.
IP address for the computer must be on the same subnet as the internal set IP of the unit.
The local software firewall on computer, router or network system must accept
communication in/out on port 10001 (open port).
Cables
Serial Mode: A cable with an overall shield terminated at the back shell should be used.
Ethernet Mode: A CAT-5, CAT-6 cable capable of 10/100/1000Mbps bandwidth transmissions.
Electrical Interface
Electrical signals shall conform to RS-485, RS-422, RS-232 or Ethernet standards. Only Receive Data, Transmit
Data, and Signal Ground are used. The same conditions apply for both Serial mode 4-wire (Full Duplex) and 2-wire
(Half Duplex), and will just be referred to as RS-485 in this document. Hardware handshake is only supported by
loopback handshake for RS-232.
- Display (Maritime Multi Display - MMD) based units are by factory default manufactured with:
• SCOM RS-422/485 : 1 x Phoenix Terminal Block 3.81, (non-iBuzzer)
• SCOM RS-232
: 1 x D-SUB 9P (female) non-isolated
• Ethernet
: 1 x RJ45 (female) for Remote Control
- Display (Industrial Standard Display - STD) based units are by factory default manufactured with:
• SCOM RS-422/485 : 1 x Phoenix Terminal Block 3.81, (non-iBuzzer)
• SCOM RS-232
: 1 x D-SUB 9P (female) non-isolated
- Panel Computer (Maritime Multi Computer - MMC) based units are by factory default manufactured with:
• COM RS-232 : Internal Virtual COM
x
(VCOM), where
x
is OS/configuration dependent.
This Virtual COM port enables you to send commands TO the same unit that you are sending FROM, which
means there is no need to differentiate between local control or remote control for communicating through
physical ports such as RS-232, RS-485/RS-422 towards other units located externally. VCOM requires a
specific Hatteland Technology software driver installed prior to use/communcation attempts.
Note: Please review next pages to read more.
Serial/Ethernet Communication (SCOM) Interface
