Micromod MOD: Extended Modbus (XModbus) OPC Server Users Guide - Manual (Page 35)

Extended Modbus OPC Server
Operation and Reference
Data Type Number of Registers Limits
Word 1 32768 to 32767
Unsigned Word 1 0 to 65535
DWord 2 -2,147,483,648 to 2,147,483,647
Unsigned DWord 2 0 to 4,294,967,295
Float 2 +/- 3.4 E38 (7 Significant digits)
DFloat 4 +/- 1.4 E308 (15 Significant digits)
New Read: Check this box to make this location the start of a read message. This may be
required to prevent the server from trying to read through invalid addresses (40100) or
from trying to read too many locations in one message (see table below). Reference IB-
MODBUS-RTU page 21 or IB-23G600 Logic Book 1 Section 4.3.1 page 20. This feature
may not be required after configuring parameters in the Device properties.
Scaling: Check to enable scaling and then select the type of scaling desired from the
Style pull down. Use the Settings button to define a scaling style.
Simulation signal: Select from Sine, Ramp or Random
The maximum number of Modbus values MODCELL and MOD 30ML can read or write
are:
Read Coil Status discrete points from (00001 - 00099) (00101 - 00199) (00201 - 00299)
(00301 - 00399) (00401 - 00499) Read Input Status discrete points from (10001 - 10099)
(10101 - 10199) (10201 - 10299) (10301 - 10399) (10401 - 10499).
Maximum Values - 99 points
Read holding registers (no ASCII or Hex) from (40001 - 40099) (40101 - 40199)
(40201 - 40299) (40301 - 40399) (40401 - 40499)
Maximum Values - 32 registers
Read holding registers (any data type) from (41001 - 41999) (42001 - 42999) (43001 -
43999) (44001 - 44999) (45001 - 45999)
Maximum Values - 125 registers
Read input registers (no ASCII or Hex) from (30001 - 30099) (30101 - 30199) (30201 -
30299) (30301 - 30399) (30401 - 30499)
Maximum Values - 32 registers
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