PowerFlex 4_40 with MicroLogix1100 on ModbusRTU_broadcast

The plc MSG 11:1 broadcasts the reference to all drives on address 8194 via N15:1. Therefore change
the value of N15:1 between 0 to 500 = 50.0Hz.
The broadcast message is a write MSG to all the drives on the network, typically used for the Logic
Control and reference words. Other drive registers would be read <strong>with</strong> a single MSG ’03 Read Holding
Register’ command.. The most important registers are:
Address Read/Write Description
8192 Write Logic Command
8193 Write Reference 0 to 500 = 0-50.0Hz
8448 Read Logic Status
8449 Read Error codes
8450 Read Frequency Command – Parameter 1
8451 Read Output Frequency – Parameter 2
Up to 8477 Read Step Logic status – Parameter 28
Remember to add 1 to the address when used in the MSG setup screen.
The program associated <strong>with</strong> this test is called
MODBUS_RTU_WITH_MICROLOGIX_1100_AND_POWERFLEX_4_DRIVES_BROADCAST.RSS
Distribution: Related to:
x Open x Inverter Use
Rockwell Offices Options Use
Drives Team Application Experience
_________________(Name) only
Page 6 of 6
Generated by D.J.Withenshaw
Date 05/09/2007
Revision A