Instruction Manual

Logic Functions - Book 1
APPENDIX B - MODBUS MASTER CONFIGURATION
B-4
Modcell datatype to register mapping table:
The following table describes how many registers the Modcell data types use and how the
data is expected to be organized. See MODCELL Logic Controller Data Base Reference
Manual IB-23G600 Section 2.3.4 for further Data Type description.
MODCELL Data Type Remarks
Discrete Takes 1 register. Valid values are 0 and 1
Short State Takes 1 register. Valid values are 0 to 15
Long State Takes 1 register. Valid values are 0 to 255
Count Takes 1 register. Valid values are 0 to 65535
Date Takes 2 registers.
1st reg. bits 15-8 0
1st reg. bits 7-0 Year (0-99)
2nd reg. bits 15-8 Month (1-12)
2nd reg. bits 7-0 Day (1-31)
Floating Point Takes 2 registers.
32 bit data value in IEEE single precision floating point format
Millisecond Time Takes 2 registers.
32 bit unsigned integer with 1 millisecond resolution
ASCII Takes as many registers as needed.
The entry for input 1 must be all UPPER CASE (ASCII is case
sensetive)
Hex Takes as many registers as needed.