Connect Tech Blue Heat/PCI PCI Serial Communications - Manual (Page 34)

Blue Heat/PCI User’s Manual, Connect Tech Inc.
Revision 0.11 34
Example 1 Example 2
The following example shows the
settings on J1 to tri-state the line
drivers upon power up of the Blue
Heat/PCI RS-422/485 adapter (6+2
model). It also shows the settings
on J2 through J13 where the
RS-422/485 port 7 is set for
termination on TxD, RTS and
bias/termination on CTS ±, and
RxD ±; the RS-422/485 port 8 is set
for no bias/termination The following example shows the
settings on J1 to enable the
RS-422/485 transmitters upon
power up of the Blue Heat/PCI
RS-422/485
adapter (6+2 model).
It also shows the settings on J2
through J13 where the RS-422/485
ports 7and 8 are set for no
termination on TxD, RTS and
bias/termination on CTS ±, and
RxD ±
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
Legend
J1 = Tri-state control
J2 = TxD termination port 7
J3 = RTS termination port 7
J4 = RxD + bias/termination
port 7
J5 = RxD - bias/termination
port 7
J6 = CTS + bias/termination
port 7
J7 = CTS - bias/termination
port 7
J8 = TxD termination port 8
J9 = RTS termination port 8
J10 = RxD + bias/termination
port 8
J11 = RxD - bias/termination
port 8
J12 = CTS + bias/termination
port 8
J13 = CTS - bias/termination
port 8
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
Legend
J1 = Tri-state control
J2 = TxD termination port 7
J3 = RTS termination port 7
J4 = RxD + bias/termination
port 7
J5 = RxD - bias/termination
port 7
J6 = CTS + bias/termination
port 7
J7 = CTS - bias/termination
port 7
J8 = TxD termination port 8
J9 = RTS termination port 8
J10 = RxD + bias/termination
port 8
J11 = RxD - bias/termination
port 8
J12 = CTS + bias/termination
port 8
J13 = CTS - bias/termination
port 8
Note:
If you wish to bias/terminate CTS ± on a specific port, you must
jumper both CTS ± positions on the appropriate jumper block.
If you wish to bias/terminate RxD ± on a specific port, you must
jumper both RxD ± positions on the appropriate jumper block.