View source for 3028

'''3028''' is the BEX, bus expander.
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==Introduction==
What does it do?

==Switches and indicators==
* Allow switch
* Vital switch
* Vital on / off indicator
* Thumbwheel 1 - BEX no. thumbwheel switch
** 0 : Dev. No. 1000000, Int. Level 13, Ident. Code 10
** 1 : Dev. No. 1000004, Int. Level 13, Ident. Code 11
** 2 : Dev. No. 1000010, Int. Level 13, Ident. Code 12
** 3 : Dev. No. 1000014, Int. Level 13, Ident. Code 13
** 4 : Dev. No. 1000020, Int. Level 13, Ident. Code 14
** 5 : Dev. No. 1000024, Int. Level 13, Ident. Code 15
** 6 : Dev. No. 1000030, Int. Level 13, Ident. Code 16
** 7 : Dev. No. 1000034, Int. Level 13, Ident. Code 17
Note: BEX No. 0 is defined as MASTER BEX and should be placed in the A crate.
* Base setting display
* Upper limit display
* Lower limit display
* Base address switches
* Upper limit switches
* Lower limit switches
For Base, Upper and Lower limit switches: the most-significant switch is topmost, and the least-significant switch is closest to the bottom of the card. On each BEX connected to a crate containing memory, the limit switches are used to specify the memory area covered by the crate. These values could also be set by a program.
==Connectors==
The A and B connectors are used for I/O, the C connector is used for the [[ND-100 Bus]].

==I/O Devices on the card==
none?

==References==
*{{ND-doc|30.008.3 EN}}, page 201

[[Category:ND-100 hardware]]