DL06 Micro PLC User Manual, 3rd Edition, Rev. E
vi
Table of Contents
Example 4: C54 ......................................................................................................4–14
If Your MODBUS Host Software Requires an Address ONLY ...................................4–15
Example 1: V2100 584/984 Mode .........................................................................4–16
Example 2: Y20 584/984 Mode .............................................................................4–16
Example 3: T10 Current Value 484 Mode ..............................................................4–17
Example 4: C54 584/984 Mode .............................................................................4–17
Network Master Operation .....................................................................................4–17
Step 1: Identify Master Port # and Slave #..............................................................4–18
Step 2: Load Number of Bytes to Transfer ..............................................................4–18
Step 3: Specify Master Memory Area ......................................................................4–19
Step 4: Specify Slave Memory Area ........................................................................4–20
Communications from a Ladder Program ...............................................................4–21
Multiple Read and Write Interlocks .........................................................................4–21
Network Master Operation (using MRX and MWX Instructions) .........................4–22
MODBUS Function Codes Supported .....................................................................4–22
MODBUS Read from Network(MRX) ......................................................................4–23
MRX Slave Memory Address ...................................................................................4–24
MRX Master Memory Addresses .............................................................................4–24
MRX Number of Elements ......................................................................................4–24
MRX Exception Response Buffer .............................................................................4–24
MODBUS Write to Network (MWX) .......................................................................4–25
MWX Slave Memory Address .................................................................................4–26
MWX Master Memory Addresses ............................................................................4–26
MWX Number of Elements .....................................................................................4–26
MWX Exception Response Buffer ............................................................................4–26
MRX/MWX Example in DirectSOFT ........................................................................4–27
Multiple Read and Write Interlocks .........................................................................4–27
Chapter 5: Standard RLL Instructions
Introduction ...............................................................................................................5–2
Using Boolean Instructions .......................................................................................5–5
END Statement ........................................................................................................5–5
Simple Rungs ...........................................................................................................5–5
Normally Closed Contact .........................................................................................5–6
Contacts in Series .....................................................................................................5–6
Midline Outputs .......................................................................................................5–6
