From: Joe.Megyes@ec.gc.ca
Date: Tue Jul 16 2002 - 17:05:32 EDT
Hi everyone!
I'd like to know if there's a way to make the Serial-1/Console rs232 port
(mux2) behave the same way as the Serial-2/UPS port (mux0) on a Hp9000s800
D380 machine, or at least to bodge up a cable to make it so.
I presently have these two devices files (under hpux 10.20) for the rs232
ports:
crw--w--w- 1 root sys 193 0x000000 Jul 15 08:37 /dev/tty0p0 (Serial-1)
crw------- 1 root sys 1 0x010000 Jan 28 08:51 /dev/tty1p0 (Serial-2)
I have a serial connection from a RAID controller plugged into Serial-2
(which
works just great), and also want to plug in an APC SmartUPS-1250 into the
other
port. I can't get it to establish communications on Serial-1, but it works
fine when I move it over to Serial-2.
I tried the old "flip pins 2<-->3" trick on the DB9-F connector, to no
avail. I
also tried jumpering pin 6 (DSR) to pin 7 (RTS), but that didn't work
either.
Should I try creating a device special file for tty0p0 using major number 1
instead of 193? Should I try a different cable pinout arrangement?
TIA! Regards, Joe M.
PS: the APC cable #940-0024B pinout which works on Serial-2 is:
Computer UPS
DB9-F DB9-M
===== =====
RxD 2 ----- 2 TxD (Send)
TxD 3 ----- 1 RxD (Receive)
GND 5 ----- 2 TxD (Ground)
************************************************
Joe Megyes, SYS/ADM (416)739-4411 AMWSD/NADM, room 4N420
Meteorological Service of Canada 4905 Dufferin Street,
Environment CANADA Downsview Ontario M3H-5T4
************************************************
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