Power Brick Controller User Manual
Connections and Software Setup
114
RS-232 Connection
The Power Brick provides a RS-232 port on the front panel. The connector is an IDC 10-pin connector,
with the pinout arranged such that a flat cable crimped to an IDC 10-pin header at this end and a 9-pin D-
sub connector at the other end will provide a standard RS-232 connection. The Delta Tau ACC-3L cable
provides this connectivity.
MAIN RS232: 10-Pin Receptacle
Front View
PIN #
SYMBOL
FUNCTION
DESCRIPTION
NOTES
1
N.C.
--
NO CONNECT
2
DTR
BIDIRECT
DATA TERM RDY
TIED TO "DSR"
3
TXD/
INPUT
RECEIVE DATA
HOST TRANSMIT DATA
4
CTS
INPUT
CLEAR TO SEND
HOST READY BIT
5
RXD/
OUTPUT
SEND DATA
HOST RECIEVE DATA
6
RTS
OUTPUT
REQ. TO SEND
PMAC READY BIT
7
DSR
BIDIRECT
DATA SET READY
TIED TO "DTR"
8
N.C.
--
NO CONNECT
9
GND
COMMON
PMAC COMMON
10
RESET_SW/
INPUT
SYSTEM RESET
RESET LOW, RELEASE HI
Note
This is a debug terminal that can be used for communicating with Power
PMAC in the event that Ethernet communication fails (e.g. to acquire
an IP address when unknown). In general, this port should not be used
to communicate to external peripherals, but rather left in case of the
need to debug.
