Delta Tau PMAC2A-PC/104 - Manual (Page 8)

PMAC2A PC104 Hardware Reference Manual
2 Introduction
Option 12: Analog-to-Digital Converters
Option 12 permits the installation of two channels of on-board analog-to-digital converters with ±10V
input range and 12-bits resolution. The key component installed with this option is U20.
Acc-1P: Axis Expansion Piggyback Board
Acc-1P provides four additional channels axis interface
circuitry for a total of eight servo channels, each including:
•
12-bit ±10V analog output
•
Pulse-and-direction digital outputs
•
3-channel differential/single-ended encoder input
•
Four input flags, two output flags
•
Three PWM top-and-bottom pairs (unbuffered)
Acc-1P Option 1: I/O Ports
Option 1 provides the following ports on the Acc-1P axes
expansion board for digital I/O connections. PMAC2A PC/104 Base Board shown
stacked with the Acc-1P axes
•
Multiplexer Port: This connector provides eight input lines and eight output lines at TTL levels.
When using the PMAC Acc-34x type boards these lines allow multiplexing large numbers of inputs
and outputs on the port. Up to 32 of the multiplexed I/O boards may be daisy-chained on the port, in
any combination.
•
I/O Port: This port provides eight general-purpose digital inputs and eight general-purpose digital
outputs at 5 to 24Vdc levels. This 34-pin connector was designed for easy interface to OPTO-22 or
equivalent optically isolated I/O modules when different voltage levels or opto-isolation to the
PMAC2A PC/104 is necessary.
•
Handwheel port: this port provides two extra channels, each jumper selectable between encoder input
or pulse output.
Acc-1P Option 2: Analog-to-Digital
Converters
Option 2 permits the installation on the Acc-1P of two
channels of analog-to-digital converters with ±10V input
range and 12-bits resolution. The key component installed
with this option is U20.
PMAC2A PC/104 Base Board shown
stacked with the Option-1P and Option-2P
boards