Communication Objects; Channel A - ABB AE/S 4.2 Product Manual

®
ABB i-bus EIB / KNX
3.3 Communication
objects
3.3.1

Channel A

36
Commissioning
Fig. 24: Communications objects – "Channel A"
No. Function
0 Output value
This communication object is used to send the output value to the bus. The output value can
be sent as:
1-bit value [0/1]
1-byte value [0...+ 255]
1-byte value [– 128...+ 127]
2-byte value [0...+ 65,535]
2-byte value [– 32,768...+ 32,767]
2-byte value [EIB floating point]
4-byte value [IEE floating point]
1 Request output value
This communication object appears if the output value is to be sent "on request".
If a "1" is received at this communication object, the current output value is sent once to
the "Output value – Channel A" communication object.
2 Measured value
outside range
The communication object can be used to check the plausibility of the sensor, e.g. wire
breakage at 1 – 10 V and at 4 – 20 mA.
When the value exceeds or falls below the set lower and upper measuring limit,
the communication object sends a "1". When the measured value is between the two limits
again, the communication object sends a "0".
A "1" is also sent as soon as the measured value lies 5% above or below the set measuring
limit, e.g. 21 mA at a set value of 4 – 20 mA.
A check is carried out after each measurement to determine whether the measured value
is outside the range.
The output value can lie up to a maximum of 10% above or below the set measuring limit.
This means that at 0 – 10 V and a set output value of 100 ohm, an output value of max.
110 ohm (11 V) can be sent. If the output value rises above 110 ohm, 110 ohm continues
to be sent. If the value falls below 110 ohm, the current output value is sent.
Further explanations about the measured value out of range in the Annex.
Table 4: Communication objects 0 to 2 – "Channel A"
Object name Data type
Channel A EIS variable
DPT variable
EIS 1 DPT 1.001
EIS 6 DPT 5.001
EIS 14 DPT 6.010
EIS 10 DPT 8.001
EIS 10 DPT 7.001
EIS 5 DPT 9.001
EIS 9 DPT 14.000
Channel A EIS1, 1 bit
DPT 1.009
Channel A EIS1, 1 bit
DPT 1.001
Flags
C, R, T
C, W
C, W