To update calculation parameters for counters, use the command unit/update_calc_flags:
svc=unit/update_calc_flags¶ms={"itemId":<long>, "newValue":<uint>}
| Name | Description | 
|---|---|
| itemId | unit ID | 
| newValue | new counter calculation flags (see below) | 
Counter calculation flags:
| Flag | Description | 
|---|---|
| 0x000 | Mileage counter: GPS | 
| 0x001 | Mileage counter: Mileage sensor | 
| 0x002 | Mileage counter: Relative odometer | 
| 0x003 | Mileage counter: GPS + engine ignition sensor | 
| 0x010 | Engine hours counter: Engine ignition sensor | 
| 0x020 | Engine hours counter: Absolute engine hours sensor | 
| 0x040 | Engine hours counter: Relative engine hours sensor | 
| 0x100 | Auto calculation of mileage from new messages | 
| 0x200 | Auto calculation of engine hours from new messages | 
| 0x400 | Auto calculation of GPRS traffic | 
{ "cfl":<uint> /* flags applied */ }