2.5
Serial Interface
The PCM- 586 pro vides two RS- 232 se rial chan nels on board, con fig ur able as RS- 422
or RS- 485 with the ad di tion of op tional driver ICs. The con figu ra tion op tions for each of
the sup ported modes are shown on the fol low ing pages.
2.5.1
COM 1 - RS-232
COM1 is I/O mapped at 3F8H and util izes a 16550-type UART con tained in the 2089.
When used in RS- 232 mode, COM1 is ter mi nated via the multi-I/O con nec tor at J4. The
con figu ra tion de tails and the pin defi ni tions when used with the CBL- 162-1 ca ble are
shown here :
021402
OPERATIONS MANUAL PCM-586
Page 2-3
WinSystems
- "The Embedded Systems Authority"
3
o
2
o
1
o
J11
U11 - Installed
U10 - Not Installed
U9 - Not Installed
COM1 - DB9
PIN DEFINITIONS
3
o
2
o
1
o
J9
1 DCD
2 RX Data
3 TX Data
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
3
o
2
o
1
o
J10
3
o
2
o
1
o
J11
3
o
2
o
1
o
J9
3
o
2
o
1
o
J8
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