46 communication interface, Serial communication (scom) interface – Hatteland Display 20 inch - HM 20T07 MIL-H User Manual
Page 46
46
Communication Interface
IND100084-6
Installation in unit
Connectorization
The remote control interface communicates with external equipment via the appropriate connector(s). Some units
may need a custom cable to operate properly. Please review the “Physical Connections” and the “Pin Out
Assignments” chapter of the units user manual to determine the correct connectorization and installation of cables
and connectors before proceeding into this chapter on the following pages.
For systems with more than one unit, the units are connected together through the unoccupied D-SUB (if available).
It is regardless which one is used, but normally COM-1 is connected to another unit, and COM-2 is connected to the
external PC.
Address
A unit’s address is set by a 5-bit dipswitch (red) on the backside of the unit (own page in this manual describes its
location). Only bits 1-4 are currently in use. The position of bit 5 has no effect.Address is adjusted according to the
following table:
Address
Bit 1
Bit 2
Bit 3
Bit 4
0
Off
Off
Off
Off
1
On
Off
Off
Off
2
Off
On
Off
Off
3
On
On
Off
Off
4
Off
Off
On
Off
5
On
Off
On
Off
6
Off
On
On
Off
7
On
On
On
Off
8
Off
Off
Off
On
9
On
Off
Off
On
10
Off
On
Off
On
11
On
On
Off
On
12
Off
Off
On
On
13
On
Off
On
On
14
Off
On
On
On
15
On
On
On
On
Selecting communication mode:
Communication mode (U5)
Duplex (U8)
RS-232
RS232
-
RS-485
Full duplex
RS422/485
Full (on)
Half duplex
Half (off)
These settings are normally carried out by manufacturer before delivery.
Serial Communication (SCOM) Interface