C - 2 4
C.3.2 Eighteen-Lead Connector
This connector interfaces the ESP6000 controller card to customer-defined
devices. The connector is physically comprised of two banks of leads,
upper and lower. Connector pin-outs are listed in Table C.3-2 and C.3-3,
and functionally described in the following paragraphs.
Table C.3-2 — Eighteen-Lead Upper Connector Pin-Outs
J11B-J16B Leads
Function
1
A_1 - _6
2
A_1 - _6
3
B_1 - _6
4
B_1 - _6
5
I_1 - _6
6
I_1 - _6
7
+5V
8
DGND
9
DGND
+5V
+5 volt (250mA maximum) supply. This supply is provided for stage home,
index, travel limit, and encoder feedback circuitry.
A_1 - _6
The A_1 input is pulled-up to +5 volts with a 1K
Ω
resistor. The signal is
buffered with a 26LS32 differential receiver. The A_1 encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
B_1 - _6
The B_1 input is pulled-up to +5 volts with a 1K
Ω
resistor. The signal is
buffered with a 26LS32 differential receiver. The B_1 encoder encoded
signal originates from the stage position feedback circuitry and is used for
position tracking.
DGND
Digital ground.
I_1 - _6
The I_1 index input is pulled-up to +5 volts and pulled down to ground
with 1K
Ω
resistors by the controller. This facilitates both single- and
double-ended signal handling into a 26LS32 differential receiver. The
Index signal originates from the stage and is used for homing the stage to a
repeatable location.
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