S661 Controller Manual Exclusive

LoopStart: NOP NOP NOP ... (x120) DJNZ R10, LoopStart // Decrement and jump if not zero The manual says DJNZ only works with registers R1-R5. It works with R10 through R15, but those registers aren't listed in the memory map. Chapter 6: Hardware Mods & The "Silent" Input Fix A common complaint in the official manual's FAQ is: "Inputs sometimes stay high when switch is open."

This information is for educational and advanced troubleshooting purposes. Always follow local safety codes. The "exclusive" methods described are based on field reverse engineering and community contribution. s661 controller manual exclusive

LD IR33 // Load Temperature GT K70 // Greater than 70c? OUT OR40 // Trigger pre-alarm relay The standard manual would flag IR33 as an "Invalid Address." Ignore that error. The compiler accepts it if you disable "Strict Address Checking" in the system flags (Flag 101). The official procedure says: "Download firmware via XMODEM on COM1 at 9600 baud." LoopStart: NOP NOP NOP