B&R HCMCO3MC-1A Communication module

The sub-menu "LOCKOUT HISTORY" will display the last ten (10) lockouts, along with the burner cycle and burner hour when the lockout occurred. When the MODE key is pressed, the screen will display the most recent lockout condition and the number of that lockout (e.g. LO #10 represents the 10th lockout of that control). The NEXT key will display the Burner Hour, followed by the Burner Cycle when the lockout occurred. The NEXT key will advance to the next lockout, and repeat the sequence listed above. The BACK key can be used to scroll back up through the sub-menu items. The MODE key will exit the sub-menu.

COMMUNICATIONS 

The protocol to be used is Modbus RTU. This is implemented by the master (PC, PLC, etc.) issuing a poll to the slave (BurnerLogix) and the slave responding with the appropriate message.DST refers to the logical address of the slave. FNC is the function being requested. FNC 03 is a read request. ADR is the message number or register number of the data being requested. For the BurnerLogix all registers are mapped as HOLDING REGISTERS, FNC 03. Register addresses begin at 40001 but is interpreted as address 00. DAT is the number of words being requested. A word is an integer consisting of 2 bytes.

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