C
HEETAH
64
S
ERIES
–
C
HAPTER
8
81-9059-0577-0
Rev. E
Proprietary Information of
PESA Switching Systems
8-18
8.8
R
EAR
P
ANEL
C
ONNECTORS
8.8.1
RS-232 Control Connectors COM 1 and COM 2
COM 1 and COM 2 (see Figure 8-10) are DB-9 Male connectors that provide RS-232 serial
communication interfaces. Pin-outs are shown in Table 8-8.
F
IGURE
8-10
RS-232 Control Connectors
T
ABLE
8-8
COM1 and COM 2 Pin Assignments
Pin
Signal
In/Out
1
CD
Input
2
RX
Input
3
TX
Output
4
DTR
Output
5
Ground ---
6
DSR
Input
7
RTS
Output
8
CTS
Input
9
RI
No Connect
•
COM 1 is the primary RS-232 CPU Link and may be connected to a PC running the 3500
Series Control System software with a null modem cable (Part No. 81-9028-0393-0).
Alternatively, COM 1 may be connected to an external control device.
COM 1 may only be used with the P1E protocol at either 9600 or 38,400 baud. Set the
baud rate with a switch on the controller board. Make sure the communication rate for
COM 1 in the 3500 Series software matches the baud rate you are using (in the software,
select
System > Communications
).
COM 1
COM 2
Pin 1
Pin 9
Содержание 64NE
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