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2IQEC2/43798 Manual 1
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
Chapter 1: Introduction
The 2IQEC2/4 is a 2/4 channel quadrature encoder 24 bit
counter card used to track the position of up to 4 separate
encoders. This card is an ISA card that can be used in either an 8
or 16 bit slot. This card allows the computer to keep track of
position without a lot of CPU overhead, freeing it up for more
important tasks.
The 2IQEC2/4 offers a huge amount of flexibility. Upon a
borrow or carry the card can be configured to reset, load a preset,
cause an interrupt request or simply send out a TTL signal to
indicate the carry or borrow. The card contains two inputs that can
be configured to clear the counter or load the preset into the
counter. The index lines may also be used to clear the counter,
load the preset or cause an interrupt. The four channels use IRQ
sharing to prevent all the computer's resources from being taken up
by this card. The interrupt service routine can poll the card to find
out which channel caused the interrupt request.
Packing List
Examine the shipping carton and contents for physical damage.
The following items should be in the shipping carton:
1. 2IQEC2 or 2IQEC4
2. 2IQEC2/4 3.5" disk
3. This instruction manual
If any of these items are damaged or missing contact B&B
Electronics immediately.
Address Switch Setup
The 2IQEC2/4 cards use a 7-position DIP switch to program
the binary I/O address of each port on the card. The 2IQEC2/4
cards are factory configured for address 0x300 with no IRQ. If you
plan on installing the 2IQEC2/4 with these settings, check the switch
settings to ensure that they did not get inadvertently changed during
shipping.