Page 3 of 12
Contents
Preface .................................................................................................................................................................................. i
Safety warnings ................................................................................................................................................................. i
Disclaimer.......................................................................................................................................................................... i
1.
Safety precautions .................................................................................................................................................... 4
2.
Overview .................................................................................................................................................................... 5
3.
Settings ...................................................................................................................................................................... 6
3.1.
Modbus Slave ID ................................................................................................................................................ 6
3.2.
Baud rate ............................................................................................................................................................ 6
3.3.
Other communication settings ........................................................................................................................... 6
3.4.
RS-485 termination ............................................................................................................................................ 6
4.
Installation ................................................................................................................................................................. 7
4.1.
Physical connection between the Procon A1M and M-, S-, and P-Series indoor units .................................... 7
4.2.
Power supply ...................................................................................................................................................... 7
4.3.
Modbus connections .......................................................................................................................................... 7
5.
Status LEDs ............................................................................................................................................................... 8
6.
Modbus connection .................................................................................................................................................. 9
6.1.
Modbus background .......................................................................................................................................... 9
6.2.
Modbus connections .......................................................................................................................................... 9
7.
Modbus tables ......................................................................................................................................................... 10
7.1.
Modbus registers .............................................................................................................................................. 10
7.2.
Discrete Inputs ................................................................................................................................................. 10
7.3.
Coils ................................................................................................................................................................. 10
7.4.
Input registers .................................................................................................................................................. 10
7.5.
Holding registers .............................................................................................................................................. 11
Summary of Contents for Procon A1M
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Page 4: ...Page 1 of 12 A RS 485 connector B CN105 CN92 connection lead 1 Fig 1 A B ...
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