PMAC-PCI Hardware Reference
2 Introduction
Option 5x: CPU Type
The base PMAC version without options has a 20 MHz CPU with flash memory RAM.
Option 5A: 40 MHz CPU, zero-wait RAM, flash backup, no battery, (~100% speed increase)
Option 5B: 60 MHz CPU, zero-wait RAM, flash backup, no battery, (~200% speed increase)
Option 5C: 80 MHz CPU, zero-wait RAM, flash backup, no battery, (~375% speed increase)
Option 6: Extended Firmware Algorithm
Option 6 provides an Extended (Pole-Placement) Servo Algorithm firmware instead of the regular
servo algorithm firmware. This is only required in difficult-to-control systems (resonances, backlash,
friction, disturbances, changing dynamics). This option requires a one-time purchase of the Acc-25
program, which is necessary for tuning the Option-6 firmware.
Option 7: Plate Mounting
Option 7 provides a mounting plate connected to the PMAC with standoffs. It is used to install the
PMAC in standalone applications.
Option 8A: High-Accuracy Clock Crystal
The PMAC PCI has a clock crystal of nominal frequency 19.6608 MHz (~20 MHz). The standard
crystal’s accuracy specification is +/-100 ppm.
Option 8A provides a nominal 19.6608 MHz crystal with a +/-15 ppm accuracy specification.
Option 10: Firmware Version Specification
Normally the PMAC PCI is provided with the newest released firmware version. A label on the memory
IC shows the firmware version loaded at the factory.
Option 10 provides for a user-specified firmware version.
Option 12: Analog-to-Digital Converters
Option 12 permits the installation of 8 or 16 channels of on-board multiplexed analog-to-digital
converters. One or two of these converters are read every phase interrupt. The analog inputs are not
optically isolated, and each can have a 0 – 5V input range, or a +/-2.5V input range, individually
selectable.
Option 12 provides an 8-channel 12-bit A/D converter. The key components on the board are U20
and connector J30.
Option 12A provides an additional 8-channel 12-bit A/D converter. The key component on the board
is U22.
Option 15: V-to-F Converter for Analog Input
The JPAN control panel port on the PMAC PCI has an optional analog input called WIPER (because it is
often tied to a potentiometer’s wiper pin). PMAC PCI can digitize this signal by passing it through an
optional voltage-to-frequency converter, using E-point jumpers to feed this into the Encoder 4 circuitry
(no other use is then permitted), and executing frequency calculations using the “time base” feature of the
encoder conversion table.
Option 15 provides a voltage-to-frequency converter that permits the use of the Wiper input on the
control panel port.
Option 16: Battery-Backed Parameter Memory
The contents of the standard memory are not retained through a power-down or reset unless they have
been saved to flash memory first. Option 16 provides supplemental battery-backed RAM for real-time
parameter storage that is ideal for holding machine state parameters in case of an unexpected power-
down.
Option 16A provides a 16k x 24 bank of battery-backed parameter RAM. This Option requires Option
4A, Option 5A, Option 5B or Option 5C.
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