User's Manual

PMAC VME Hardware Reference Manual
34 PMAC Basic Specifications
General-Purpose
Digital Inputs
(JOPTO)
Eight general-purpose digital inputs; 0-24V levels;
Hardware jumper sets as normally high or normally low;
Connector configured for easy hook-up to OPTO-22.
Rated to 100 mA.
General-Purpose
Digital Outputs
(JOPTO)
Eight general-purpose digital outputs; +5V to +24V high level (if greater than +5V,
work from external voltage)
Sinking (standard) or sourcing (no-cost option) configurations possible; rated to 100
mA; Connector configured for easy hook-up to OPTO-22.
Serial
Communications
RS-232 serial data port (PMAC Lite or STD)
Single-ended +/-6-10V levels
RS-422 serial data port (PMAC PC, VME, STD, or Lite with Opt-9L);
Differential 0-5V TTL levels.
PMAC receivers accept standard RS-232 signals.
PMAC transmitters send signals recognizable by most RS-232 receivers. (Acc-26
available for optically isolated conversion between RS-422 and RS-232 levels.)
Configurable for 300 to 76,800 baud
Eight bits, one start bit, one stop bit, no parity.
Uses RD+, RD- (RXD/), SD+, SD- (TXD/), CS+, CS-, (CTS), RS+, RS- (RTS), and
GND lines. Shorts DSR to DTR.
Up to 16 cards may be daisy-chained on a single communications line with software
addressing.
Bus (Parallel)
Communications
Bus communications (8-bit wide data); type of bus determined by version of card.
For PMAC PC, Lite, or STD, on-board Programmable Interrupt
Controller permits interrupting of host on excess following error, in-position, buffer
request, character request, position-compare-equals, or programmatically.
For PMAC VME, 16 8-bit mailbox registers for bi-directional transmission of
commands and data.
A16, A24, and A32 addressing modes possible.
D08 data transmission used.
Dual-Ported RAM
(Option 2 Required) 8K x 16 bits of dual-ported RAM for PMAC PC, Lite, or VME
Usable for binary data transmission in either direction
Control-Panel
Dedicated Inputs
(JPAN)
9 dedicated manual control functions on low-true 0-5V TTL inputs: RUN, STEP,
ABORT, HOLD, HOME, JOG+, JOG-, PREJOG, RESET; intended for momentary
toggle switches.
4 motor-/coordinate-system-select lines (BCD coded; low-true TTL) that set what the
above inputs affect.
1 0-10V analog input for feedrate override control (requires Option 15).
1 2-channel handwheel encoder input (TTL levels).
Discrete inputs may be used as general-purpose inputs with I2=1 or with select lines
at 0.
Discrete outputs may be used as general-purpose outputs with select lines at 0.
Thumbwheel
Multiplexer I/O
(JTHW)
Eight TTL input lines; eight TTL output lines; Automatic firmware support for
multiplexed I/O accessories:
Acc-8D Opt 7 R/D converters (absolute serial data)
Acc-8D Opt 9 Yaskawa encoder interface (absolute serial)
Acc-18 Thumbwheel Board
Acc-34 Family of I/O Boards
Up to 16 of these boards may be multiplexed on the port. Port may also be used as
non-multiplexed general-purpose I/O.