Delta MMC120 User Manual download pdf (Page 99)

MMC120 Linear Motion Control Module Appendix B: Event Control

Delta Computer Systems, Inc 360/254-8688 99

Enhanced Link Types

Enhanced Link Types provide a way to trigger an event on one axis from the other axis' parameters. The

Enhanced Link Types have the same link description, value, and range as the Basic Link Types, plus additional

link types.

The bits in the Enhanced Link Type byte are defined as follows:

MSB LSB

Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8

Bit 1 - Enhanced Link Type flag. 1 = Enhanced Link Type

0=BasicLinkType

Bits2and3-Definetargetaxis:

01 = Axis 2

00 = Axis 1

Bit 4 - Direction flag: 1 - Enables Step when monitored parameter is greater than link value

0 - Enables Step when monitored parameter is less than link value

Bit 5 - Reserved

Bits6,7,and8-Definelinktype:

111 = Reserved

110 = Status Word bit

101 = Actual Speed

100 = Target Speed

011 = Reserved

010 = Reserved

001 = Actual Position

000 = Target Position

For example:

Parameter Link Type Byte

Monitored Axis Direction Binary Hex Go to Link Next when:

Target Pos. 2 1 1011 0000 B0 Axis 2 Target Position >= Link Value

Actual Speed 1 0 1000 0101 85 Axis 1 Actual Speed <= Link Value

Step Execution

When a Step is started the command is executed immediately, then the link condition (Link Type and Link

Value) is evaluated. If the condition is met, the next Step in the sequence (Link Next) executes on the next

millisecond control loop interval. If the condition is not met, it will be re-evaluated every millisecond until the

condition is met, then the next Step will execute.

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 105

No comments

Delta MMC120 User Manual Page 99