AutomationDirect DURAPULSE GS3-2010, User Manual

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Chapter 5:
DURA
PULSE MODBUS Communications
5–40
Programming Differences for Direct LOGIC PLCs
Different types of DirectLOGIC PLCs can be programmed differently, depending
upon the types of network read and write instructions they can perform. There are
two different types of these instructions, and this User Manual shows
programming examples of both types.
RX/WX Instructions for DL05, D2-250(-1), D4-450
PLCs with DL05, D2-250, D2-250-1, and D4-450 CPUs can read from and write
to networks using RX (Read from Network) and WX (Write to Network)
programming instructions.
MRX/MWX Instructions for DL06, D2-260
In addition to the RX and WX instructions listed above, PLCs with DL06 and
D2-260 CPUs can also read from and write to networks using MRX (Modbus Read
from Network) and MWX (Modbus Write to Network) programming instructions.
The MRX and MWX instructions are simpler and easier to use than are the RX and
WX instructions. Therefore, we recommend that you use DL06 or D2-260 with
MRX and MWX instructions if you have a choice.
DURA
PULSE AC Drive User Manual 1st Ed. Rev. D 05/2013