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Service manual CS3000
Chapter 3: Interface board RS232K-2 3-32
The circuit boards of the central unit
Document no.:
S-4-007.875/E
Prepared:
1995-03-17 Fia
Revision:
R4 2004-03-15 BM
© 2002, Consilium Marine AB
Interface board RS232K-2
General
The RS232K-2 is an addressable interface board used for connecting the
CS3000 system to external computers, modems, terminals, mimics, serial
printers, etc.
The board is equipped with two RS232 channels and two RS485 channels.
One of the RS232 channels is accessible through a D-sub header on the front
panel and the other channels are connected via the back-plane.
The RS232K-2 is controlled by LPK-2 via the address and data buffers in the
back plane. All channels are programmable for baud-rate and other
communication parameters. The functions of the board are set by the definition
programme.
Handling
Indications
There are ten green LEDs on the front panel of the board.
No 1 when lit: proper voltage supply.
No 2 when lit: the board is properly polled.
No 3 when lit: RS232 channel #2 sending.
No 4 when lit: RS232 channel #2 receiving.
No 5 when lit: RS232 channel #2, RTS active.
No 6 when lit: RS232 channel #2, CTS active.
No 7 when lit: RS485 channel #1 sending.
No 8 when lit: RS485 channel #1 receiving.
No 9 when lit: RS485 channel #2 sending.
No 10 when lit: RS485 channel #2 receiving.
Fuse
The battery voltage is fused. If the fuse is blown a signal is activated in the
back plane. The fuse is accessible on the front panel of the board, and can be
used for disconnecting the power.
Fuse rating: 250 mAT 5x20 mm
Setting the address
The address of the board is set with a DIP-switch (SW1). The address bits #5 -
#9 are set. Bit #5 is set with SW1-4. The address of each RS232K-2 board is
set according to the definition in the Definition program. For more information
see Appendix A.
1
2
3
4
5
6
7
8
9
10
Salwico RS232K-2