Philips PC-Link Manual page 6

J17 and J18 jumpers are used to select UART communication line.
UART RS232
J17 J18
3
Jumper on
position 1 – 2 2
1
J13, J14, and J16 jumpers are used as bias-, termination, and bias +. Usually,
in one RS485 line, there's only 1 pair of bias - and bias +, while terminations
are only placed in the outermost modules.
Condition Examples
If module is at the end of line and
the network doesn't have bias +/–
If module is at the end of line and
there is bias +/- on the network
If module is not at the end of line
and the network doesn't have bias
+/-
If module is not at the end of line
and there is bias +/- on the network
J5 blue terminal is a connector for I
connector for DAC.
J5
Pin Name
1 GND Ground reference
2 SDA I
3 SCL I
J11
Pin Name
1 GND Ground reference
2 DAC Voltage output from DAC
UART RS485
Jumper on
position 2 – 3
2 C interface, while J11 blue terminal is a
2 C-bus input/output data
2
C-bus clock input
6
UART TTL
J17 J18
3
Jumper
2 released
1
Jumper Configuration Examples
16
14
13
16
14
13
16
14
13
16
14
13
Function
Function
J17 J18
3
2
1