MODBUS-GW Installation and Operation Manual — P/N LS10015-000NF-E:C2 4/30/2019 33
Point Device Type Holding Registers Register Mapping
5.3 Point Device Type Holding Registers
There are 2000 point device type holding registers. Each register address consists of two bytes (upper and lower) as defined in Table 5.3
representing two detectors or modules as shown in Table 5.4. Devices in the upper byte have even number points; devices in the lower
byte have odd number points.
Table 5.3 Point Device Type Holding Register Bit Definitions
Upper Byte Lower Byte
Bit No.
151413121110987 6543210
Device Types (see Appendix D)
Table 5.4 Point Device Type Holding Register Addresses
Start Address End Address Devices In Upper Byte Devices In Lower Byte
44001 44100 Loop 1 Detector 2,4,6,8,10...158 Loop 1 Detector 1,3,5,9,11...159
44101 44200 Loop 1 Module 2,4,6,8,10...158 Loop 1 Module 1,3,5,9,11...159
44201 44300 Loop 2 Detector 2,4,6,8,10...158 Loop 2 Detector 1,3,5,9,11...159
44301 44400 Loop 2 Module 2,4,6,8,10...158 Loop 2 Module 1,3,5,9,11...159
44401 44500 Loop 3 Detector 2,4,6,8,10...158 Loop 3 Detector 1,3,5,9,11...159
44501 44600 Loop 3 Module 2,4,6,8,10...158 Loop 3 Module 1,3,5,9,11...159
44601 44700 Loop 4 Detector 2,4,6,8,10...158 Loop 4 Detector 1,3,5,9,11...159
44701 44800 Loop 4 Module 2,4,6,8,10...158 Loop 4 Module 1,3,5,9,11...159
44801 44900 Loop 5 Detector 2,4,6,8,10...158 Loop 5 Detector 1,3,5,9,11...159
44901 45000 Loop 5 Module 2,4,6,8,10...158 Loop 5 Module 1,3,5,9,11...159
45001 45100 Loop 6 Detector 2,4,6,8,10...158 Loop 6 Detector 1,3,5,9,11...159
45101 45200 Loop 6 Module 2,4,6,8,10...158 Loop 6 Module 1,3,5,9,11...159
45201 45300 Loop 7 Detector 2,4,6,8,10...158 Loop 7 Detector 1,3,5,9,11...159
45301 45400 Loop 7 Module 2,4,6,8,10...158 Loop 7 Module 1,3,5,9,11...159
45401 45500 Loop 8 Detector 2,4,6,8,10...158 Loop 8 Detector 1,3,5,9,11...159
45501 45600 Loop 8 Module 2,4,6,8,10...158 Loop 8 Module 1,3,5,9,11...159
45601 45700 Loop 9 Detector 2,4,6,8,10...158 Loop 9 Detector 1,3,5,9,11...159
45701 45800 Loop 9 Module 2,4,6,8,10...158 Loop 9 Module 1,3,5,9,11...159
45801 45900 Loop 10 Detector 2,4,6,8,10...158 Loop 10 Detector 1,3,5,9,11...159
45901 46000 Loop 10 Module 2,4,6,8,10...158 Loop 10 Module 1,3,5,9,11...159