Basic Documentation

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Siemens RWD Primary Controls Modbus Interface CB1P3099en_01
Building Technologies RWD Parameters & Addresses 27.10.2009
RWD
Parameter
Addresses
RWD
Parameters
Data Format Detailed Descriptions & Data Interpretation
3: Stage3
30029 RWDType IEEE754 RWD Type
0: RWD62
1: RWD34
2: RWD32S
3: RWD68
4: RWD32/82
5: NA
6: RWD45
7: RWD44
30031 X1_H IEEE754 High Range for X1 (Sensor) Input
30033 X1_L IEEE754 Low Range for X1 (Sensor) Input
30035 X2_H IEEE754 High Range for X2 (Sensor) Input
30037 X2_L IEEE754 Low Range for X2 (Sensor) Input
30039 X3_H IEEE754 High Range for X3 (Sensor) Input
30041 X3_L IEEE754 Low Range for X3 (Sensor) Input
30043 3P_Output IEEE754 % of valve opened
30045 B1_TEMP IEEE754 Temperature sampled via B1 sensor input
32767: B1 input OPEN
32767 to -32768: Value as per IEEE754
-32768: B1 input Shorted to Ground
30047 B2_TEMP IEEE754 Temperature sampled via B2 sensor input
32767: B2 input OPEN
32767 to -32768: Value as per IEEE754
-32768: B2 input Shorted to Ground
30049 B3_TEMP IEEE754 Temperature sampled via B3 sensor input
32767: B3 input OPEN
32767 to -32768: Value as per IEEE754
-32768: B3 input Shorted to Ground
30051 COST_SAVED IEEE754 Total cost saved by heating system
30053 LIMIT_STATUS Refer to each
bit for
explanation
Status of the relays
Bit 0: B2_Limit_Min_Charge
0: Not in limitation status
1: In minimum charging limitation via B2
Bit 1: B3_Limit_Min_Charge
0: Not in limitation status
1: In minimum charging limitation via B3
Bit 2: B3_Limit_Max_Tank
0: Not in limitation status
1: In maximum tank temperature limitation via B3
Bit 3: B1_Limit_Max_Tank
0: Not in limitation status
1: In maximum tank temperature limitation via B1
Bit 4: B2_Limit_FrostProtect
0: Not in frost protect status
1: In frost protect status via B2
Bit 5: B3_Limit_FrostProtect
0: Not in frost protect status
1: In frost protect status via B3
Bit 6: COST_OUT_RANGE
0: Still in range of 0 to 9999