User`s manual

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FIGURE 9
AA1754 - QUAD BOARD COUNTER The selection of the switch banks is done by switching select lines 1 and 2 on
The quad board module is a 4-bank version of the clickpot module with each connector P3. The select lines are "low true" meaning that if a select line is
bank having 6 decades. The user can "dial in" four different move lengths pulled low (to 0Vdc), it is recognized as being "on" or "true". When a select
and then select any one of them as desired. The module is connected to the
line is not pulled low it is internally "pulled up" to +5Vdc and is "off" or "false".
indexer via a supplied 5-lead cable. The bank select lines must be set at least 1 millisecond before the Index
CONNECTOR Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6
P1 (To Indexer) Common +5Vdc Clock Reset Key 0Vdc
P2 (Expansion) Common +5Vdc Clock Reset Key 0Vdc
P3 (Select Select #1 Select #2 Select #4 Key +5Vdc 0Vdc
Inputs)
command is given. The select lines must remain in the set state until the
index is complete. Once the move is finished, the select lines may be
changed as needed.
BANK SELECT TABLE SELECT LINE
#1 #2
SWITCH BANK #1 0 0
SWITCH BANK #2 1 0
SWITCH BANK #3 0 1
SWITCH BANK #4 1 1
0=LOW (0-0.8Vdc), 1=HIGH(3.5-5Vdc)
Select line #4 is only used if additional count input devices are
"daisychained" to the expansion connector (P2). If select line #4 is low, that
quad board is ignored and the count input device connected to the P2
expansion connector is read. This allows multiple quad boards to be used
together. The "daisychained" count input device does not have to be a quad
board; it could be a thumbwheel switch or click pot module.