96 Appendix B
EXAMPLE of 03 Read Holding Registers function format:
This example reads the Room 1 Room Mode and Room 1 Low Alarm Status.
QUERY RESPONSE
Field Name (Hex) Field Name (Hex)
Slave Address 01 Slave Address 01
Function 03 Function 03
Starting Address Hi 00 Byte Count 04
Starting Address Lo 0E Data Hi 00
No. Of Registers Hi 00 Data Lo 02 (2 = Negative)
No. Of Registers Lo 02 Data Hi 00
Error Check (CRC) -- Data Lo 02 (2 = Alarms Enabled)
Error Check (CRC)