TROUBLESHOOTING
DIAGNOSTICS
5 - 4
I-E96-221A
®
P4 - CTT Port
The IMCPM02 module supports the signals required for the
CTT terminal listed in Table
through the round, five-pin
male connector (P4). Jumper P4 is mounted on the faceplate of
the IMCPM02 module.
P5 - EWS Port
The IMCPM02 module supports the signals required for the
EWS port (serial channel A) as described by Table
through
the DB-25 female connector (P5) mounted on the faceplate.
Jumper J5 configures DCE or DTE operation.
P6 - Utility Port
The IMCPM02 provides a DB-9 connector on board for develop-
ment and diagnostic purposes. It is not available for customer
use.
DIAGNOSTICS
The IMCPM02 module firmware contains diagnostic routines
that can be invoked from power up. When in the diagnostic
mode, it does not function as an IMCPM02 module. The
Table 5-4. CTT Port Signals
Pin
Signal
1
+5 VDC
2
Common
3
Common
4
Power fail interrupt
5
Module bus
Table 5-5. EWS Port Signals
Pin
Signal
1
Protective ground
2
Transmitted data (TXD)
3
Received data (RXD)
4
Request to send (RTS)
5
Clear to send (CTS)
6
Data set ready (DSR)
7
Common
8
Data carrier detect (DCD)
20
Data terminal ready (DTR)
