Axislink Specifications - Allen-Bradley 1394 User Manual

A-16 Specifications
Publication 1394-5.0 — May 2000

AxisLink Specifications

The table below lists the AxisLink specifications for the system
module (1394x-SJTxx-C-xx, -L-xx, and -T-xx systems).
The:
Baud rate
Cable type
Cable length
Number of motion controllers
Addressing
Number of virtual master axis
Type of virtual master axes
Slave axes
Number of discrete I/O
Discrete I/O response
Is:
Standard and extended node
configuration
Extended length configuration
Standard and extended node
configuration
Extended length configuration
Standard and extended node
configuration
Extended length configuration
Standard and extended length
configurations
Extended node configuration
Standard and extended length
configurations
Extended node configuration
Standard configuration
Extended length and extended
node configurations
All configurations
Standard and extended length
configuration
Extended node configuration
All configurations
All configurations
One megabit per second
500 kbits per second
Allen-Bradley 1770-CD RIO cable (Belden 9463 or
equivalent)
Belden 9182, Carol C8014, or equivalent
25 m (82 ft) maximum. 1 m (3 ft) minimum between
controllers.
125 m (410 ft) maximum. 1 m (3 ft) minimum between
controllers.
8 maximum for a total of 32 possible axes
16 maximum for a total of 64 possible axes
User-selectable address via rotary selector switch on
front panel
User-selectable address via GML
4 maximum; 1 per motion controller. Any axis on any
motion controller can be a virtual master axis to any
other motion controller. Each motion controller can
define a total of 2 separate axes on any other motion
controllers as virtual master axes, but only one can be
active any time. A total of 4 different axes can be active
as virtual master axes at any time.
2 maximum; 1 per motion controller. Any axis on any
motion controller can be a virtual master axis to any
other motion controller. Each motion controller can
define a total of 2 separate axes on any other motion
controllers as virtual master axes, but only one can be
active any time. A total of two different axes can be
active as virtual master axes at any time.
Command and actual. Each virtual master axis may be
defined to report its command or actual position.
31 maximum total per virtual master axis (3 local + 4 x
7 other motion controllers = 31).
63 maximum total per virtual master axis (3 local + 4 x
15 other motion controllers = 63).
112 inputs maximum and 16 user-defined outputs per
motion controller. Any motion controller can read 16
discrete outputs of any other motion controller, giving a
maximum of 7 x 16 = 112 discrete inputs per motion
controller. For extended node configuration, discrete I/
O can still only be obtained from a maximum of 7 other
controllers (112 inputs maximum), not from all 15 other
controllers available in a 16 node maximum extended
node configuration.
≤ 1 millisecond