User's Manual
    PMAC VME Hardware Reference Manual 
42  PMAC Basic Specifications 
Acc-18: Thumbwheel Multiplexer Board (bare). Comes with 1 180 cm (6') 26-pin cable. 
OPT-1:  Expansion Connector (for daisy-chain to next Acc-18). 
OPT-2:  One 8-Position DIP Switch (eight max; in place of two thumbwheel digits). 
OPT-4:  One decimal thumbwheel digit (16 max; specify location). 
OPT-5:  External Power Connector. 
OPT-6:  Molex connectors w/ mates (16 max; for remote digit). 
An Acc-18 configuration sheet is available and can be used to define the required options and the number 
and location of all the thumbwheel digits. 
Accessory 20: Hand-Held Terminal 
This accessory provides a TM200G-001 hand-held or panel-mountable (~5" x 8" x 3/4") terminal for 
simple operational communications needs. The terminal communicates with the serial port on the 
PMAC. It provides a numeric keypad with 6 special programmable function keys; also an alphanumeric 
2 x 24 LCD display. Comes with a 24" 26-pin cable. 
Accessory 21: I/O Simulators and Cables 
Acc-21 is a family of I/O simulators and cables for connection to the J5 (JOPT) connector on PMAC. 
Many users will purchase OPTO-22 boards and connect it to PMAC with an Acc-21 cable from Delta Tau. 
Acc-21F:  180 cm (6') 50-pin card edge to 34-pin IDC header cable, for connecting PMAC JOPTO 
connector to PB8/16/24 or equivalent boards. 
Acc-21FH:  180 cm (6') 50-pin IDC header to 34-pin IDC header cable, for connecting PMAC 
JOPTO connector to PB8/16/24H or equivalent boards. 
Acc-21G:  180 cm (6') 50-pin card edge to 50-pin IDC header cable, for connecting Acc-14D/V and 
Acc-34B to PB8/16/24 or equivalent boards. 
Acc-21GH:  180 cm (6') 50-pin IDC header to 50-pin IDC header cable, for connecting Acc-14D/V 
and Acc-34B to PB8/16/24H or equivalent boards. 
Acc-21S:  I/O simulator for PMAC JOPT port with eight switch inputs and eight LED outputs. 
Comes with 1m (40") 34-pin cable. 
Accessory 22: Extended Warranty 
This accessory extends the warranty past the one year standard factory warranty, for a total of two years 
from the date of purchase. 
Accessory 24: Axis Expansion Board 
The Acc-24 Axis Expansion board (Acc-24P is for the PMAC PC; Acc-24V is for the PMAC VME; there 
is no Acc-24 for the PMAC STD) provides four or eight additional channels each of quadrature encoders, 
analog outputs, and data lines from analog inputs (for a total of 12 or 16 each for the PMAC). This 
accessory is for those systems that require more than the eight channels of each that can be provided on 
the baseboard. This would include systems with more than four PMAC-commutated motors, or with 
more than eight quadrature encoders and handwheels. The board fits in the next open bus slot, and 
communicates to PMAC via a provided 50-pin flat cable. 
Acc-24P:  Four-Channel Expansion Board for the PC bus. Comes with two 8 cm (3") cables, one 
50-pin and one 10-pin. 
Acc-24V:  Four-Channel Expansion Board for the VME bus. Comes with two 8 cm (3") cables, one 
50-pin and one 10-pin. 
OPT-1:  Additional four channels on the board (eight total). 
OPT-2:  20 cm (8") 50-pin 3-drop connector cable. When Acc-24 is used with PMAC OPT-2, 
Acc-14D/V, or Acc-36P. 










