2-18
2
TABLE 2-2 4807/2307 JUMPER SETTINGS
Jumper
Functions
Factory
Setting
W1
RS-232 or RS-422 Signal Selection
232
W2
RS-232 Selection
Installed
W3
FD (Full duplex) or HD (Half duplex) selection
Omitted
for RS-422/RS-485 signals
W4
Default - Returns the unit to its factory default
Omitted
settings when in place at power turn-on time.
Leave out for normal operation
W5
Write Enable - Must be in place to write to
Installed
or save in flash memory.
GND
EN
TXB+
TXA-
RXA-
RXB+
Vcc
GND
485F Converter
RD(B)
RD(A)
SD(A)
SD(B)
2307
RS-232
Signals
RS-422
Signals
3.3K
Ω
560
Ω
485F
2307
Signals Pins
Pins Signals
GND
1
TxEna
2
TX(B)
3
4
RD(B)
TX(A)
4
3
RD(A)
RX(A)
5
2
SD(A)
RX(B)
6
1
SD(B)
VCC
7
GND
8
Notes: GND and Vcc are powered by the 485's 9 Vdc Power Adapter
3.3K
Ω
560
Ω
Figure 2-8 2307 RS-422 Test Connections