Samson 5179 8.6Error alarms, Operational faults, Example of a transfer to the control system

Operational faults

Example of a transfer to the control system:

The error status register is transferred as a word <w> in a holding register (HR) whose value is calculated as follows:

<w> = ([D0] x <1> + [D1] x <2> ) +...+ ([D11] x <2048>)

Holding register 61 (A set bit is indicated by			on the right of number):
Number = Bit no. in HR	0 1 2 3	4		5	6	7	8	9	10	11	12	13	14	15
Bit value	20 21 22 23	24		25	26	27	28	29	210	211	212	213	214	215
Thermal disinfection	D0
Limit at terminal x active	D1
Limit at terminal y active	D2
VFmax at DHW exchanger	D3
Temperature monitoring	D4
–	D5
–	D6
–	D7
	D8
	D9
	D10
Extended	D11
limit monitoring

(D8 to D15)	D12
	D13
	D14
	D15

8.6Error alarms

Error alarms can be sent over a modem either directly to the control station or over the SMS text message function to a mobile phone or to a fax. Just one function (Modbus, SMS function or fax function) can be selected at one time since the functions use the same interface. The error alarms to a mobile phone and to a fax contain the number of the affected error status register (FSR1), the fault as per error status register (BitNo), the controller ID and the bit number (Bit xx).

EB 5179 EN 73