true If this option is set, the server will use 0 based coil, input status, and register addresses. For instance, register 40001 will be 0, 40002 will be 1, etc.

|                  | simple | modbus |
|------------------|--------|--------|
| Coil             |   0    | 1      |
| Coil             |   1    | 2      |
| Input            |   0    | 10001  |
| Input            |   1    | 10002  |
| Holding Register |   0    | 30001  |
| Holding Register |   1    | 30002  |
| Input Register   |   0    | 40001  |
| Input Register   |   1    | 40002  |