Xylem CL500 ONLINE CHLORINE ANALYZERS MODBUS - Manual (Page 9)

4.2 Input Status
These single-bit values are readable from the master. The data will be returned with the lowest
addressed input status in the LSB of the data. Unused bits in the data will be set to 0.
4.2.1 Valid Command(s)
Code Name Broadcast
0x02 Read Input Status No
4.2.2 Format
16-bit word format
MSB LSB
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
4.2.3.Valid Addresses
10001 – 10XXX
4.2.4 Definitions
Address Function Default
10001 Instrument error False
10002 Instrument error with alarm (levels 1,2and 3) False
10003 Alarm 1 active False
10004 Alarm 2 active False
CL500 Modbus (3/09)
Rev. 1.3 7