Emerson ControlWave EFM 3808 Instruction Manual page 32

ControlWave Express Instruction Manual (CI-ControlWave Express)
P1
CW
(COM3)
or
CWEXP
(COM5/6)
8-Pin
RJ45
Plug
(Looking into Connector Intf. Side of P1)
RS-232 Cable
Guidelines
2-18
When interfacing to the COM3 port of a ControlWave, or the COM5 or
COM6 port a ControlWaveEXP unit, use the cable presented in Figure
2-9 along with one of the cables shown in Figure 2-6 or Figure 2-7.
RJ45 to DB9 Cable Ass'y.
(P/N 392844-01-0)
Pin 1 (Wht/Grn Stripe) to Pin 1 = DCD
Pin 2 (Wht/Blu Stripe) to Pin 6 = DSR/RX+
Pin 3 (Blu/Wht Stripe) to Pin 2 = RXD/RX-
Pin 4 (Grn/Wht Stripe) to Pin 7 = RTS
Pin 5 (Wht/Org Stripe) to Pin 3 = TXD/TX-
Pin 6 (Wht/Brn Stripe) to Pin 8 = CTS
Pin 7 (Orn/Wht Stripe) to Pin 4 = DTR/TX+
Pin 8 (Brn/Wht Stripe) to Pin 5 = GND
Figure 2-9. Full-duplex and Half-duplex Cable
Observe the following guidelines when constructing RS-232
communication cables:
 Ensure that DCD is high to transmit (except when dialing a modem)
 Verify that each RS-232 transceiver has one active receiver while
disabled (in power down mode); connect the DCD signal to the
active receiver.
 Set CTS to high to transmit.
 If the port is set for full-duplex operation, RTS is always ON.
 Ensure that DTR is always high when port is active; DTR enables
RS-232 transceivers.
: Control DTR using the PORTCONTROL function block and
Note
the _Pn_AUTO_DTR system variable in your ControlWave
project. If you turn DTR off through these mechanisms, the
port remains off, even though hardware is fully configured.
 When port is set for half-duplex operation, CTS must go low after
RTS goes low.
 All RS-232 comm ports support RTS, DTR, CTS, DCD, and DSR
control signals.
 All RS-232 comm port I/O signals are protected by surge protectors.
Installation
P2
CW Express
J4 (COM1)
9-Pin Male
"D" Connector
(Looking into Wire Terminal Side of P2)
Revised Mar-2011