Westermo IDW-90, User Manual

Page: 21 / 44

21 6620-2200
S2 DIP-switch
DTE flow control
ON
1 2 3 4 5 6 7 8
Use stored values
ON
1 2 3 4 5 6 7 8
Hardware flow control
RTS/CTS AT&K3
ON
1 2 3 4 5 6 7 8
No flow control CTS is always ON,
RTS ignored AT&K0&R1
ON
1 2 3 4 5 6 7 8
Software flow control
XON/XOFF
CTS is always ON, RTS
ignored AT&K4&R1
ON
1 2 3 4 5 6 7 8
No flow control CTS follows DTR,
RTS ignored AT&K0 &R2
ON
1 2 3 4 5 6 7 8
Software flow control
XON/XOFFCTS fol-
lows DTR, RTS ignored
AT&K4&R2
ON
1 2 3 4 5 6 7 8
No flow control CTS follows changes
on RTS AT&K0&R0
ON
1 2 3 4 5 6 7 8
Software flow control
XON/XOFF
CTS follows
RTS AT&K4
S2 DIP-switch
DTR handling
ON
1 2 3 4 5 6 7 8
Use stored values
ON
1 2 3 4 5 6 7 8
DTR is evaluated:
Dropping the DTR line
by the DTE will discon-
nect an existing ISDN
connection.An incoming
call will be accepted only
with DTR active. AT&D2
or AT**cdtr = 2
ON
1 2 3 4 5 6 7 8
DTR is evaluated:
Ignored. AT&D or AT**cdtr = 0
ON
1 2 3 4 5 6 7 8
DTR is evaluated:
Incoming calls will be
accepted independent of
DTR status; DTR drop
disconnects an active
connection. AT&D4 or
AT**cdtr = 4
S2 DIP-switch
RS-485 control
ON
1 2 3 4 5 6 7 8
RS-232 enable
RS-422/485 disable
ON
1 2 3 4 5 6 7 8
RS-422/485 4 wire
enable RS-232 disable
ON
1 2 3 4 5 6 7 8
RS-485 2 wire enable
RS-232 disable
S2: 8 not used