Connect Your DF1 PLC5, SLC or MicroLogix PLC To a Modbus RTU Master Device
Your legacy Allen-Bradley serial PLC can now communicate with a Modbus RTU Master.
It’s the perfect tool to save legacy PLCs from the scrap pile and extend their useful life.
How Do I Use the 460MRSDFM in My Application?
For most applications the mapping is very straight forward. Modbus register and coil data is mapped to files in the PLC’s data tables. For example, you can map N7:200 to Modbus Register 40200 to be read by your Modbus Master. Bi directional data transfer is supported.
It really is that simple.
Why Use Real Time Automation as a Gateway Supplier?
While there are certainly a number of other companies offering gateways, there is no one who provides the level of support and service that you receive from RTA.
When you call, a live person answers the phone. When you talk with sales, you will get honest answers and recommendations. When you get support, it is from an engineer who had a hand in the product’s development, and support doesn’t require a ticket or 24 hour wait.
Try the RTA difference today.
Modbus RTU Slave Features
Modbus Operation Modes
Modbus RTU Slave
Function Codes Supported
1,2,3,4,5,6, 7,15 & 16
Byte and Word Swapping
Maximum Modbus RTU Master Connections
Contiguous Data Areas
200 Total - 100 reads & 100 writes
Data Area Limits
500 Contiguous Coils or 500 Contiguous Registers
DF1 Master Features
DFM Full Duplex and DFM Half Duplex
MicroLogix 1000, SLC 5/03 5/04 5/05, most PLC5s
Maximum number of Devices supported
1 in Full Duplex Mode, 32 in Half Duplex
Data Type Supported
100 Integers or 100 Binaries, or 50 floats, 82 character string per scan line.
100 input, 100 output
RS485 and RS232
You can configure up to 9 different users access to diagnostic and configuration screens.
Set <, <=, >=, >, ==, !=, and Change-of-State rules on any data moving through the gateway. If alarm rule is triggered an email notification can be sent.
Allows for data manipulation during protocol translation. Scaling and other data format changes can occur in the gateway.
Status and Counters
Protocol specific status, counters and error messages are accessible within the gateways diagnostics page. They can also be delivered to a connected device.
Diagnostic Logging Page
Allows users to see and log start up sequences, protocol specific messages & error messages.
to download our Gateway Comparison PDF