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JACE-6 Mounting and Wiring Instructions
Published: April 19, 2007
Part Number 10821
Wiring Details
Communications Wiring
14
Note
If a modem option card (NPB-MDM) is installed, this port becomes disabled—except if rebooted with
the mode jumper (see
on page 6) in the “Serial Shell” position.
RS-485—
An RS-485, optically isolated port uses a 3-position, screw terminal connector and always operates
as COM2. Wire to this connector with shielded 18-22AWG wiring (refer to the TIA/EIA-485 standard). As
shown in
, the screw terminals (from left-to-right) are shield, plus (+), and minus (–).
USB —
A single USB port is on the top board.
Note
The USB port is for future use.
Table 3
Serial port (RS-232 and RS-485) pinouts.
Base RS-232 DB-9 Port (COM1)
Base RS-485 Port (COM2)
Pinout References
Signal
DB-9 Plug Pin
Pinouts
DCD
Data carrier detect
1
RXD
Receive data
2
TXD
Transmit data
3
DTR
Data terminal ready
4
GND
Ground
5
DSR
Data set ready
6
RTS
Request to send
7
CTS
Clear to send
8
not used on the JACE-6
9
DB-9 Plug
(male)
1
5
6
9
3-position connector
(male)
S + –