Delta RMC151 - Manual (Page 1038)

RMC70/150 and RMCTools User Manual
starting with slot 0 to the left.
number = the input or output number.
Discrete I/O are also mapped to the Discrete I/O registers and can be addressed by
addressing the bit in the register. See the RMC150 DI/O and RMC70 DI/O register map
topics for the addresses of the I/O.
Register Addresses in Integer Format
Occasionally, an addresses may need to be represented in integer format. This section
describes how to convert register addresses from the standard register representation to
an integer.
RMC addresses are represented in IEC 61131 address 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.
9.3.4. FINS Addressing
This topic describes the FINS addressing format as used by the RMC. For other addressing
formats, see the Register Map Overview topic.
The FINS address format must be used when communicating with the RMC75E or RMC150E
via the FINS protocol.
Address Format
The RMC memory uses the D and E memory areas. The FINS addressing assigns a single
number to each register in RMC memory. In the FINS protocol, the addresses are 0-
based. Because the FINS protocol is 16-bit based, and the RMC has 32-bit registers, the
addresses of RMC registers are even.
The RMC interprets the current E memory as the first extended memory E0_. For
example, E01200 is interpreted as E0_01200.
Determining FINS Addresses
To obtain the address of RMC registers in FINS format, use the Register Maps. The maps
provide the FINS address for each register.
In addition, you can use the calculation below to determine the FINS address, given the
IEC address.
Manual Calculation
The FINS address is calculated according to the following equation:
FINS Address = Dnnnnn or Ennnnn-32768
nnnnn = 2 x [(256 x file) + element]
where the RMC IEC addressing format is %MDfile.element
if nnnnn < 32768, then the prefix D is used with nnnnn.
if nnnnn >= 32768, then the prefix E is used with nnnnn - 32768
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