Coils; Discrete Inputs - Procon A1M Installation Manual

13.1.

Coils

Coils are read using function code 01 and written to using either function code 05 or 15. Function code 05 is used when writing to a single coil register, function code 15 is
used for writing to multiple coil registers in the same command.
Register Name
Power On/Off
13.1.

Discrete Inputs

Discrete Inputs are read using function code 02.
Register Name
Thermo On/Off
Auto Fan Speed Control
Availability
Night Purge
Coil (Digital Output)
Modicon
Addr
Address
0 = Power OFF
3 00004
1 = Power ON
Discrete Input (Digital Input)
Modicon
Addr
Address
0 = Thermo OFF
80 10081
1 = Thermo ON
0 = Not available
81 10082
1 = Available
0 = Normal operation
1 = In night purge operation
82 10083
During night-purge operation:
Details
Details
Applicable Unit Type
Applicable Unit Type
85