Yaskawa NS300 - Manual (Page 4)

Subject: Technical Note Product: NS300/NS500 Doc#: EM.MCD.05.106
Title: NS300/500 Master Ladder Example
Doc#: Copyright Yaskawa Electric America
©2004
May 9, 2007 Page 4 of 16
Register Summary
The chart below shows the assignment of the global and I/O registers used in the example program. Local
registers are used throughout the program, but are not listed in this chart. This chart contains the registers
accessed directly by the user.
Table 2. Example Master Ladder Register Addressing
Input Function Input Bit Bit Symbol Functionality
Input 0 IB00000 MB00000 PLC_ESTP N.C. E-stop
Input 1 IB00001 MB00001 PLC_SVON Enables Servo
Input 2 Alarm Reset IB00002 MB00002 PLC_ALARM_RESET Clears NSxxx Alarm
Input 3 Start IB00003 MB00003 PLC_COMMAND_START Starts motion command
Input 4 Direction IB00004 MB00004 PLC_DIR Selects forward/reverse
Input 5 Inc/Abs IB00005 MB00005 PLC_ABS_INC Incremental or absolute
Input 6 Hold IB00006 MB00006 PLC_HOLD Pauses motion command
Input 7 Cancel IB00007 MB00007 PLC_CANCEL Cancels motion command
Register Setting
MW00002 0
MW00003 1
ML00004 2
PLC_STEP_NUMBER ML00006 3
PLC_STATION_NUMBER ML00008 4
PLC_POINT_TABLE_ROW ML00010 5
PLC_TARGET_POSITION ML00012 6
PLC_PARAMETER_NUMBER MW00014 7
PLC_PARAMETER_DATA ML00016 8
PLC_CURRENT_POSITION_SET ML00018 9
10 Read Parameter
11 Write Parameter
12 Set Current Position
13 Set Zero Point
14 Read Alarm
15 Reset Module
PLC_COMMAND_SELECT
PLC_RESPONSE_CODE
PLC Command Bits
Bits to be controlled by PLC program
MP940D Local I/O Inputs
User inputs to simulate PLC signals
Symbol
/E-Stop
Servo On
PLC Command Registers
Command data loaded into these registers
Station
Point Table
Zero Point Return
Positioning
PLC_RESPONSE_CODE Settings
Determines meaning of response message
Follow response code settings as listed in user's manual.
External Positioning
Notch Output Positioning
Multi-Speed Positioning
Description
No operation
Feed
Step
PLC_COMMAND_SELECT Settings
Value to be loaded for type of motion command
PLC_FEED_SPEED