ROC364 Instruction Manual
4-12 Communications
Cards
Rev
Jun/05
4.4 Connecting Communications Cards to Wiring
Signal wiring connections to the communications cards are made through the communications port
connector and through TELCO (RJ11) connectors supplied with certain modem cards. These
connections are summarized in Table 4-4 and detailed in Sections 4.4.1 to 4.4.5.
NOTE:
Use a standard screwdriver with a slotted (flat bladed) 1/8" width tip when wiring all
terminal blocks.
Failure to exercise proper electrostatic discharge precautions (such as wearing a grounded wrist
strap) may reset the processor or damage electronic components, resulting in interrupted
operations.
Table 4-4. ROC300-Series Communications Card Signals
Comm Card
Port Pin
1 2 3 4 5 6 7 8 9
EIA-232 (RS-232) CARD
DCD
RX
TX
DTR
COM
DSR
RTS
CTS
RI
EIA-422/485 (RS-422/485)
CARD, 422 Usage
RX–
RX+
TX+ TX–
EIA-422/485 (RS-422/485)
CARD, 485 Usage
OUT–
OUT+
RADIO MODEM
RXA
TXA
COM
PTT+
PTT–
LEASED-LINE MODEM,
COMM Port, 4-wire Private
Line
TIP2
RING2
RING1
TIP1
LEASED-LINE MODEM,
RJ11 Port, 2-Wire
TIP
(RED)
RING
(GRN)
N/A N/A N/A N/A
LEASED-LINE MODEM,
RJ11 Port, 4-Wire
TIP2
(BLK)
TIP1
(RED)
RING1
(GRN)
RING2
(YEL)
N/A N/A N/A N/A
DIAL-UP MODEM, RJ11
Port
RING
(RED)
TIP
(GRN)
N/A N/A N/A N/A
DIAL-UP MODEM, COMM
Port (output only for
analyzer)
SPK RXD TXD DTR COM RI
SHUT
DOWN
+5V DSR