Kontron VMOD-2D - Manual (Page 44)

VMOD-2/VMOD-2D
12/15/97
Functional Description
Page 2 - 18 Man. ID 03139, Rev. Index 0200
2.5.3 Pin Outs of the VMOD's Front Panel Connector with two VMOD-2s
The respective half of the VMOD-2's front panel 50-way connector (pins 1...24 for lower posi-
tion and pins 27.....50 for upper) assume the relationship of the piggybacks (as fitted to
VMOD-2) signals as routed from their ST2 (via the BU2a or BU2b) through connections as
shown in table 2.5.2 on previous page.
The connector's pins 25 and 26 are used as an external reset (or emergency stop loop) on the
VMOD-2, and were left "not used" on the original VMOD.
An option to have the VMOD-2 with no front panel connector, but rather a 50-way header
behind a blank front panel will provide an identical pin-out to the standard 50-way front panel
connector, and is provided for applications where the flat band cable is to be routed internally,
or where an alternative front panel is to be fitted and used. Take care to note that the 50-way
header is unpolarized, and can be accidently missconnected if the flat-ribbon connector is
turned upside-down.
Figure 2-7: VMOD Front Panel Connector
Note.
In systems having more than one connector of this type, or when using
several VMOD-2s with different piggybacks, it is advisable to put one or
two drops of colored paint on the back of the connector and on the front
panel of the VMOD-2 to which it was made for. The connector splits virtu-
ally in half (pins 1...24 and 27 to 50) for connection to the respective pig-
gybacks location behind it. Pins 25 and 26 are used by the "local reset"
VMOD
2
Odd pins
Pin 49
Pin 1
Eve n pins
Pin 50
Pin 2