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Comments to the components:
F3
1.5 A fuse (not replaceable; the whole PCB should be
replaced).
J1
Terminal block for the unit connections.
J2
"D" connector (9 ways, male), RS232 interface for SW
download.
(Note, jumpers "JP3" and "JP4" have to be in pos. "A".)
J3
Not used in this unit.
J4
Used when SW mode and address setting shall be done.
J8
Not used in this unit.
J10
Not used in this unit.
J11
Not used in this unit.
JP1
Reset. (Restart of the unit.)
JP2
Boot. (The unit has to be in "bootstrap" mode before SW
download.)
JP3
Pos. "A":
Pos. "B":
JP4
Pos. "A":
Pos. "B":
JP8
Used when the unit is the last unit on the line, i.e. to
connect the built-in end-of- line resistor (120R).
JP9
For future use.
Connector for the front panel.
KEY1LED1
P1
Potentiometer for LCD contrast adjustment.
PC, for SW download, connected via "J2".
The unit is connected to the C.I.E. (default).
PC, for SW download, connected via "J2".
The unit is connected to the C.I.E. (default).
28
Technical Description
AAU 1736 – Rev 1
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