Delta RMC151 - Manual (Page 420)

RMC70/150 and RMCTools User Manual
To read the data from the mapped registers, read from F18:0 to F18:7. Now,
instead of reading 8 registers in various locations, the user can read 8 registers in
one block. Notice that if a mapped register is read-only, you cannot write to it.
Choosing the Address Format
The addresses of the registers in the Indirect Data Map are displayed in the Reg #
column. To change the address format, right-click any cell in the Reg # column, choose
Address Formats, and choose the desired format.
Structure of Indirect Data Map Registers
The Indirect Data Map consists of two arrays of values. The first array is called the
Indirect Data Map Definition, which holds register addresses that each entry in the second
array (Indirect Data) represents. The Indirect Data Map Definition can be used for both
readable and writable registers.
Note:
The Indirect Data registers are the registers that should be written or read when
communicating to the RMC, not the Indirect Data Definition registers.
RMC70 RMC150
Indirect
Data Map
Definition
Indirect
Data Map
%MD17.0 %MD18.0
%MD17.1 %MD18.1
•
•
•
•
•
•
%MD17.63 %MD18.63
Indirect
Data
Definition
Indirect
Data Map
%MD41.0 %MD42.0
%MD41.1 %MD42.1
•
•
•
•
•
•
%MD41.255 %MD42.255
Changing the Indirect Data from a PLC
Typically, the Indirect Data Map is set up in RMCTools. However, you can change the
Indirect Data Map during runtime to map different registers. To do this, write to the
Indirect Data Map Definition registers. The Indirect Data Map Definition registers contain
the addresses of the mapped registers. When writing addresses to the Indirect Data Map
Definition registers, those addresses must be entered as an integer value as described
here:
RMC addresses are represented in IEC format as:
%MDfile.element, where file = file number, and element = element number.
Use the following equation to convert a register address to integer format, N:
N = file * 4096 + element
Example:
Register address %MD8.33 is 8*4096 + 33 = 32801.
6.5. Communicating with HMIs
The RMCs can communicate with many types of HMIs (Human-Machine Interfaces). This topic
describes the protocols the HMI must support in order to communicate with each of the RMC
400 Delta Computer Systems, Inc.