Delta MMC120 User Manual download pdf (Page 80)

Appendix A: DCS120 MMC120 Linear Motion Control Module

80 Delta Computer Systems, Inc. 360/254-8688

The DCS120 Screen

The DCS120 main screen is divided into five parts:

Read Only Parameters Initialization Command

Parameters Queue

Command Parameters

Input Field

Read Only Parameters

Read Only parameters contain status information about the Motion Control Module. On color monitors this area is

green. These parameters are updated automatically by the controller. Do not attempt to write into this section; entries

are ignored.

Command Parameters

These Parameters are written to the module by DCS120. They contain the commands and related parameters for

execution by the module. This area can be either red or yellow. When DCS120 is in Readback mode the area is red,

and when in Write mode it is yellow. (Note: Readback mode is used to monitor the Motion Control Module as the PLC

is giving commands.)

Input Field

This line is where you enter parameters and commands. If you hold down the Alt, Ctrl or Shift keys, it also displays the

available commands. See 'Summary of Keyboard Commands' for more information.

Initialization Parameters

The initialization parameters contain all the information necessary for the Motion Control Module to control the axes.

If you change these parameters, the new values are written to the module only when a ‘P’ command (Alt-P) is issued.

These parameters are gray before an Alt-P is issued and white after (gray indicates that the parameters have not been

transferred to the Motion Control Module).

Command Queue

The Command Queue is a record of the commands and data sent to the module by the PLC. It shows the most recent

256 events (16 per page, with 16 pages), with the newest at the top of the queue. You can scroll through the record

with the Page Up/Page Down keys; a pointer (|) shows which page you are on in the Queue. You can use the queue to

confirm that the ladder logic is sending only the expected commands to the MMC120. You can save the Command

Queue to a .log file by using the SQ filename command (do not enter the '.log' extension).

There are four columns in the Command Queue, with the following meanings:

Column: 4X+0 4X+1 4X+2 4X+3

Meaning: CmdtoAxis1 DataOuttoAxis1 CmdtoAxis2 DataOuttoAxis2

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 104 105

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Delta MMC120 User Manual Page 80