Delta RMC151 - Manual (Page 1037)

9 Register Reference
9.3.3. IEC-61131 Addressing
This topic describes the IEC addressing format as used in the RMC. For other addressing
formats, see the Register Map Overview topic.
The RMC uses the IEC-61131 standard for its register addresses. This format can be used in
User Programs and Expressions, although Delta recommends using tag names where possible.
Address Format
The IEC address format for the registers in the RMC is:
%MDfile.element
where
M indicates it is a location in memory
D indicates it is a 32 bit word.
file = the file number. This file number corresponds to the file number in the DF1
addressing.
element = the element number. This element number corresponds to the element
number in the DF1 addressing.
Example
For the RMC70, %MD8.8 is the Axis 0 Actual Position, and %MD8.0 is the Axis 0 Status.
Individual Bits
Some RMC registers contain individual bits that you may wish to address. The IEC
address for a specific bit in the RMC is:
%MXfile.element.bit
where
M indicates it is a location in memory
X indicates it is a single bit.
file = the file number.
element = the element number.
bit = the bit number (0-31).
Example
The user would like the address for the RMC70 Enable Output Status Bit on axis 0. Then,
file = 8, the file number for Axis 0 Status registers,
element = 0, the element number of the Status Bits register,
and
bit = 7, the bit number for the Enable Output bit.
Therefore, the address is %MX8.0.7
Discrete I/O
Discrete Inputs and Outputs can be addressed in IEC format as shown below. The IEC
address is also displayed in the I/O Monitor and the Discrete I/O Configuration dialog.
RMC70 RMC150
%IXnumber or %QXnumber
where
Q indicates it is an input.
I indicates it is an output.
X indicates it is a single bit.
number = the I/O number. %QXslot.number or %IXslot.number
where
Q indicates it is an input.
I indicates it is an output.
X indicates it is a single bit.
slot = the slot number of the RMC150,
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