Using AutomationDirect DL-series PLCs

The RMC family of controllers can communicate with AutomationDirect DirectLogic PLCs via Ethernet or serial RS-232/485.

RMC and AutomationDirect DirectLogic PLC Compatibility

AutomationDirect PLC	RMC75E, RMC150E, RMC200	RMC75S
DL05/06	Requires H0-ECOM100 module. Use Modbus/TCP master.	Requires D0-DCM Module. Use Modbus/RTU master.
DL105	Not Compatible	Not Compatible
DL205	Requires H2-ECOM100 module. Use Modbus/TCP master.	DL250-1 and DL260 support Modbus/RTU master on the CPU. No support for 230 and 240.
DL305	Not Compatible	Not Compatible
DL405	Requires H4-ECOM100 module. Use Modbus/TCP master.	Not Compatible

Example Programs

Delta provides example PLC programs to help you quickly set up the communications between your PLC and the RMC. See the downloads section of Delta's website at https://deltamotion.com.

Communicating via Ethernet

Use the AutomationDirect Hx-ECOM100 modules to communicate with the RMC via Ethernet. Refer to the AutomationDirect HX-ECOM-M manual for instructions on how to use it.

Setting up the Hx-ECOM100

For each RMC that the PLC will communicate with, use NetEdit to add a Peer-to-Peer configuration to the Hx-ECOM100 for Modbus/TCP. Specify the Modbus/TCP protocol and enter the IP Address of the RMC. The Port number must be 502. The value in the Unit ID is not important.

Using the to the Hx-ECOM100

Use the Hx-ECOM100 as a Network Client (master), as described in the MODBUS TCP/IP for H0/H2/H4–ECOM100 chapter, Network Client (master) Operation section of the Hx-ECOM100 manual.

Calculating RMC Register Addresses

Use the Modbus Addressing topic for instructions on finding the Modbus/TCP addresses of the desired registers in the RMC. Then convert the addresses to octal as described in the Hx-ECOM100 manual.

The AutomationDirect PLCs cannot access all the registers in the RMC. Therefore, use the Indirect Data Map to map the desired registers to one location that the PLC can read. This also makes the communications more efficient.

Communicating with the RMC75S

For the DL05/06 series, set up the D0-DCM module as a Modbus/RTU master. For the 250-1 or 260, configure the second CPU port as a Modbus/RTU master.

Calculating RMC75S Register Addresses

Use the RMC75 Register Map to find the Modbus/TCP addresses of the desired registers in the RMC75S. Then convert the addresses to octal as described in the Hx-ECOM100 manual.

The AutomationDirect PLCs cannot access all the registers in the RMC75S. Therefore, use the Indirect Data Map to map the desired registers to one location that the PLC can read. This also makes the communications more efficient.