Leased-Line Communications Card Wiring - Emerson Fisher FLOBOSS 407 Instruction Manual

FloBoss 407 Instruction Manual
The following signals, used for monitoring or connecting to an analyzer, are available at connector P7
located at the bottom edge of the card. These signals are normally not active. To activate them, pin 8
(Shutdown) must be grounded to pin 2 using a jumper; this does not affect normal operation. All
unused signals can be left unterminated.
P7
Terminal
1
2
3
4
5
6
7
8

4.4.4 Leased-Line Communications Card Wiring

The Leased-line Modem Card interfaces to a leased line through the RJ11 jack. Refer to Section 4.3.2
for jumper settings and Section 4.3.3 for attenuation resistors. The terminal functions depend on the
mode of operation of the card, either 2-wire or 4-wire, as follows:
RJ11
TERMINAL
BLK
RED
GRN
YEL
Figure 4-11 shows the wiring connections to the card.
Rev 5/00
Function
+5 Vdc
COM
DCD
TXD
DTR
RTS
RXD
Shutdown
OPERATING MODE
2-Wire 4-Wire
(Not used) Tip2
Tip Tip1
Ring Ring1
(Not used) Ring2
4-15