Chapter 5: DURAPULSE MODBUS Communications
5–14
Communicating with AutomationDirect PLCs
The following steps explain how to connect and communicate with the
DURA
PULSE AC drives using AutomationDirect PLCs.
Step 1: Choose the Appropriate CPU
The DURAPULSE AC drives will communicate with the following
AutomationDirect PLCs using Modbus communications.
• Modbus control is easier to accomplish from a DirectLOGIC PLC with an RS-
485 port and MRX/MWX, or from a CLICK PLC using Send/Receive instructions.
Step 2: Make the Connections
DURAPULSE RS-485 Serial Comm Port
The DURAPULSE Comm Port requires an RS-485 input.
RS-232 signals can be converted to RS-485 by using a separate converter.
PLC Connections for RS-485 Modbus RTU Control of DURAPULSE Drive
Drive PLC * PLC Port * Communication Direct Cable Length
DURAPULSE (GS3)
CLICK 3 RS-485 ZL-RJ12-CBL-2P *** 2m [6.6 ft] ***
DL05 2 ** RS-232 – RS-485 ** N/A **
DL06
D0-DCM
2 RS-485
GS-485HD15-CBL-2 ***
2m [6.6 ft] ***
D2-DCM
D2-250(-1)
2 ** RS-232 – RS-485 ** N/A **
D2-260 2 RS-485
GS-485HD15-CBL-2 ***
2m [6.6 ft] ***
D4-450 3 ** RS-232 – RS-485 ** N/A **
* If a PLC type or port is not listed in this chart, it cannot function as a Modbus RTU master.
** Requires RS-232–RS-485 converter & generic cabling options described later in this chapter.
*** Termination resistors not required due to short cable length.
Choose Your CPU
Primary Choices
CLICK Analog CPU with Send/Receive instructions & RS-485 comm port
D2-260 or DL06 with MRX / MWX instructions & RS-485 comm port
Secondary Choices
CLICK Basic CPU with Send/Receive instructions & RS-232 comm port
DL05, D2-250(-1), or D4-450 with RX / WX instructions & RS-232 comm port
DURAPULSE drives have a provision for shutting down control or power to the inverter
in the event of a communications time out. This feature can be set up through
parameters P9.03, P9.04, and P9.05.
DURAPULSE AC Drive User Manual
1st Ed. Rev. D 05/2013
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