Registers

A register is a place in the RMC memory that stores data. The registers in the RMC are 32 bits and are any of the following data types:

REAL: 32-bit floating point
DINT: 32-bit integer
DWORD: 32-bit string of bits

Each register in the RMC can be addressed with several address types, such as Allen-Bradley DF1, Modbus, Omron, and IEC. Some register addresses are displayed in RMCTools, such as in the Reg # column in Axis Tools, Indirect Data Map, and the Variable Table. To view those addresses in various formats, in the Reg# column, right-click the address and choose Address Formats.

When referencing registers from within the RMC, such as in user programs, you do not need to use an address. You can use tag names instead. Tag names are given in the topic for each register.

Finding Register Addresses

When setting up communications with the RMC from a host controller such as a PLC, you will need to find the addresses of registers in the RMC. To do so,use the Address Maps in RMCTools, or the Register Map help topics.

Address Maps

In the Project tree, double-click Address Maps.
Choose the desired addressing protocol.
Browse the registers list for the register you need.

The Register Maps help topics list the addresses of all the registers in the RMC75, RMC150, and RMC200, and include links to detailed descriptions of each register.

Address Formats

For each register, the register map provides addresses in the formats listed below. The address type you use will depend on the communication method you use. For more details on the addressing formats, see the respective topics.