Raco Catalyst Addendum To Owner's Manual page 7

• Catalyst with Ethernet autodialers don't work this way. All the different areas are mapped on top of one
another.
30001 holds the same value as 40001.
Coil 00001 holds the same value as the first bit of 30001 or 40001
Registers 1-123 hold read only input data
Coils 1-1968(16-bit*123) hold input data
Registers 1025 to 1147 hold read/write output data
Coils 16385 (16-bit*1025) to 18353 (+16-bit*123) hold read/write output data
•
This allows flexibility to look at data as input registers, holding registers, coils, etc., as many Modbus
masters don't have all functions implemented
•
Since Catalyst channels are completely compatible with the logical and I/O addressing scheme for the
file structure of the Allen Bradley controllers (SLC series and newer) processors, the table below should
look familiar.
Register Address
0xxxx
1xxxx
2xxxx
3xxxx
4xxxx
Note: The 5x and 4x references share the same data space. That is, an address of the form 5nnnn takes the 32
bits beginning at location 4nnnn and extending through 4nnnn + 1. These 32 bits are then interpreted as an
IEEE floating point number.
Important:
Catalyst Ethernet SNA addresses have the form 1*2*(Register Address). 1 Table #1 illustrates the data
file convention within the Catalyst and the link to PLC via SNA (Source Net Address).
Table #1 also shows the Allen-Bradley-supported address types available to link to Catalyst channels.
Indirect, indexed and symbolic addressing schemes are not supported.
Saved: 2014-06-18
Filename: Catalyst Ethernet Addendum 1 1 V1_5 released
•
Description
Coil number xxxx
Input number xxxx
Input register number xxxx
Output register number xxxx
Floating Point register
Description
Register
Address
0xxxx Coil number xxxx
1xxxx Input number xxxx
3xxxx Input register number xxxx
4xxxx Output register number xxxx
5xxxx Floating Point register
RACO Manufacturing and
Engineering
TABLE #1
Size/Limitation
1-bit
1-bit
16-bit
16-bit
32-bit
•
Table #2
Catalyst SNA
1*node*0xxxx
1*node*1xxxx
1*node*3xxxx
1*node*4xxxx
1*node*5xxxx
Size /
Limitation
1-bit
1-bit
16-bit
16-bit
32-bit
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