CMS-660 SYSTEM
CIRCUIT MONITORING SYSTEM (CMS)
25
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Modbus
Operation mode
This register [3000h] describes the operation mode and response behavior on measurement read
requests.
Value
Description
xxx0
Normal operation
This bit is set by control unit, writing this bit is ignored
xxx1
Configuration mode active
This bit is set by control unit, writing this bit is ignored
00xx
Default, no reset
x1xx
Restart of control unit
x2xx
Remove all sensors from system
1xxx
Factory reset of control unit
2xxx
Reserved
4xxx
Resume after factory reset
• Normal operation:
- Control unit refreshes continuously the measurement data according defined pattern.
• Configuration mode:
- Control unit stops continuous measurement data acquisition.
Internal bus traffic gives priority to configuration messages, see next sections “Sensor physical
assignment time out, start procedure” and “Sensor physical assignment time out, bus mode”.
• Restart of control unit:
- Reset of the device. Behavior as being disconnected from supply voltage and connected again.
Settings/configurations will be hold.
• Remove all sensors from system:
- Reset ID of all sensors.
• Factory reset of control unit:
- Unconditional reset of the device. All control unit settings / configurations will be lost.
• Resume after factory reset:
- Garbage collection after factory reset. System tries to reconstruct system setup, when previous
factory reset was carried out for a control unit without physically connected sensors. System tries
to find the sensors which before have been added to another system.
