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Modbus Holding Registers
I/O Point Gateway Node 1 Node 2 Node 3 Node 4 Node 5 Node 6 Node 7
15 15 31 47 63 79 95 111 127
16 16 32 48 64 80 96 112 128
EtherNet/IP
™
Registers
EtherNet/IP on ControlLogix PLC Register Map
The DX80 wireless system is controlled by a ControlLogix PLC using EtherNet/IP through assembly objects and the Common Industrial
Protocol (CIP). Add the SureCross Gateway to the ControlLogix PLC as a “Generic Ethernet Module.”
There is one input assembly object for all DX80 input points and one output assembly object for all DX80 output points. Each object is
228 elements long, with each element a 16-bit integer.
The SureCross Gateway is configured at the factory to send all inputs and outputs for the first 16 Nodes in the system. To change the
factory settings, change the XML configuration file using the SureCross Web Configurator web pages.
Input Assembly Object, DX80 Input, Instance 100 (0x64). Words are not allocated for any specific unit but are used, in device order,
for each of the device input registers selected using the EIP checkbox.
Output Assembly Object, DX80 Outputs, Instance 112 (0x70). Words are not allocated for any specific unit but are used, in device
order, for each of the device output registers selected using the EIP checkbox.
For proper EtherNet/IP communication, the minimum requested packet interval should be 150 milliseconds or higher.
Instance 100 Instance 112
Word # Inputs Word # Outputs
0 Input 1 0 Output 1
1 Input 2 1 Output 2
2 Input 3 2 Output 3
3 Input 4 3 Output 4
… … … …
… … … …
226 Input 227 226 Output 227
227 Input 228 227 Output 228
EtherNet/IP to PLC5 and SLC5 Register Map
Allen-Bradley’s PLC5 and SLC5 family of devices use PCCC communications over EtherNet/IP. The DX80 wireless system supports
these PLCs using input and output register arrays.
There is one input assembly object for all DX80 input points and one output assembly object for all DX80 output points. Each object is
228 elements long, with each element a 16-bit integer. The DX80 wireless data table addresses are N7 for read and N14 for write. The
MSG instruction only handles up to 103 words; use multiple MSG instructions if all data is required.
N7 - Read Registers N14 - Write Registers
0 Input 1 0 Output 1
1 Input 2 1 Output 2
2 Input 3 2 Output 3
3 Input 4 3 Output 4
… … … …
SureCross Performance GatewayPro
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