PORT 1
PORT 2
RS232C BOARD, 562-047
REV. A THROUGH D
Jl /
This RS232C board provides two ports. Looking at the board from the front of the card rack, the top port is referred
to as Port 1 (the LOCAL port). Port 1 interfaces with the local printer (if equipped). The bottom connector is
referred to as Port 2 (the REMOTE port). Port 2 interfaces with remote peripheral equipment using RS232C or
20-mA current loop signals.
Switch package Jl (Figure 3) is used to select the baud rate for each port. There are three baud rates available
to the system. See the CPU board, jumper package Jl (Figure l), to determine the baud rates for the LOCAL
and REMOTE ports.
Jl
Set the switches on switch package Jl as follows:
LOCAL PRINTER
Baud Rate 1 = CLOSE switch 7
REMOTE PRINTER
Baud Rate 1 = CLOSE switch 8
Baud Rate 2 = CLOSE switch 6
Baud Rate 3 = CLOSE switch 4
’ o-/-o UNUSED
ti+ UNUSED
o-/a
e-0
Baud Rate 2 = CLOSE switch 5
Baud Rate 3 = CLOSE switch 3
3
BAUD 3 LOCAL
BAUD 3 REMOTE
C++ BAUD 2 LOCAL
e-0 BAUD 2 REMOTE
o-/-o BAUD 1 LOCAL
o-/--o BAUD 1 REMOTE
FIGURE 3
Caution: If you close more than two switches on Jl , you will destroy the CPU board’s baud rate generator!
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