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Summary Information

Communication Driver Name: DHRIO

Implementation DLL: T.ProtocolDriver.DHRIO.dll

Protocol: DH+ network

Interface: TCPIP

PLC Types Supported: PLC5 or SLC500 devices using 1756-DHRIO (ControlLogix DHRIO Communication Module) in ControlLogix PLC

Manufacturer: Rockwell

PC Hardware Requirements: Ethernet board

Channel Configuration

Protocol Options

Model: Select the PLC Model: 5 or 500

Node Configuration

Station Configuration

Station syntax: <IP>;<Port>;<BackPlane>;<DHRIO Slot>;<DHRIO Channel>;<DH+Node>

Where :

<IP> = The IP address of the ControlLogix device in the network
<Port> = The TCP port where the ControlLogix device is listening (default is 44818)
<BackPlane> = Used in the device
<DHRIO Slot> = The slot used for the 1756-DHRIO module in ControlLogix
<DHRIO Channel> = The channel used for the 1756-DHRIO module in ControlLogix
<DH+Node> = The node used in the DH+ network

Station Example

The PrimaryStation is: 192.168.1.101 ; 44818 ; 1 ; 2 ; A ; 0

Point Configuration

Address

The syntax for the AB Ethernet communication points is: <FileType><FileNumber>:<Address>[Parameter]

FileType: the valid values are:

Term	Read	Write	Bit Read	Bit Write	Data Type	Address Size
N Integer	Yes	Yes	Yes	Yes	Word	2 bytes
B Binary	Yes	Yes	Yes	Yes	Word	2 bytes
F FloatPoint	Yes	Yes	Yes	Yes	Single	4 bytes
O OutputLogical	Yes	Yes	Yes	Yes	Word	2 bytes
I InputLogical	Yes		Yes		Word	2 bytes
S Status	Yes	Yes	Yes		Word	2 bytes
T Timer (Model 500 only)	Yes	Yes			Word or Bit	2 bytes or 1 bit
R Control (Model 500 only)	Yes	Yes			Word or Bit	2 bytes or 1 bit
C Counter (Model 500 only)	Yes	Yes			Word or Bit	2 bytes or 1 bit

FileNumber: The File number related to the FileType
Address: The Element address in the configured File
Parameter: Additional parameter for the Timer, Control, and Counter

Ex.: .Len, .Pre, .ACC, .EN, .TT, .DN, etc.

Address Example

Address= N7:10

Troubleshoot

The status of the driver's execution can be observed through the diagnostic tools, which are:

• Trace window
• Property Watch
• Module Information

The above tools indicate if the operations have succeeded or have failed. A status of 0 (zero) means communication is successful. Negative values indicate internal driver errors, and positive values indicate protocol error codes according to AB specification.