Gilderfluke&Co BR-SmartMedia - Manual (Page 25)

input. An ‘opening’ is when that voltage is removed. The inputs
can be triggered on any voltage from 12 to 24 VDC. If you don’t
have an external source of power for these two inputs, you can
‘steal’ some juice from the BR-SmartMedia’s power supply connec-
tions. Just put the ‘J8 Power’ switch in the ‘Internal’ position.
Power Supply: The last ten contacts of the BR-SmartMedia’s edge
connector are used for the power supply connections. The BR-
SmartMedia can be run from any supply voltage from 9 to 24
VDC.
The power supply input is protected from reversed polarity. An
idle BR-SmartMedia draws only about 150 milliamperes. The LEDs
on its face will usually draw far more current than the BR-
SmartMedia itself.
Primary RS-422 Serial Port: This is used for configuration, uploading
a n d d o w n l o a d i n g c o n f i g u r a t i o n s , s t a t u s i n q u i r i e s ,
AutoDownloading show data to SmartMedia, and serial port
RealTime updates. It is compatible with all the RS-422 Serial Ports
and protocols used on Gilderfluke & Company products.
The four active lines on this connector are bussed to the
backplane of the card cage. This allows you to communicate to a
whole card cage full of BR-SmartMedia, 'Smart' Brick Brains,
Electronic FeedBack (EFB) 'Smart' Bricks and other cards through
the connector on the card cage. They just need to be set to dif-
ferent addresses.
The serial data signals from the BR-SmartMedia are brought
out on a six position RJ-12 (six position, six conductor modular
telephone style connector) on the card cage. Facing the end of
the cable with the release latch upwards, its pin out is as follows:
COLOR SIGNAL NAME:
LEFT #1 white Signal Ground
#2 black - Serial data out from card
#3 red + Serial data out from card
#4 green - Serial data in to card
#5 yellow + Serial data in to card
RIGHT #6 blue Signal Ground
PC and Compatible Connections: If you are only talking to a
single BR-SmartMedia and your wire length is short, you may be
able to simply cross wire the RS-232 serial port on your PC to talk
to the BR-SmartMedia. This does not work on all PCs, as some
don’t swing their RS-232 outputs as far as they should. If it does
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