15
8.3 I/O data input: circuit protectors
Originator
Target bytes 4…163
Each circuit protector has up to two channels. The input and output data are always transmitted for both possible channels.
10 bytes input data are exchanged for each circuit breaker containing the status of the channel, the load current and the
load voltage. If the circuit protector used has only one channel, the status of the second channel is marked as not available
(0xFF) and the load current and the load voltage are set to 0.
Design of the input bytes per circuit protector is as follows:
Byte
Type
Range
Description
Status channel
0
byte
0 ... 255
0xFF (255) =^ no device available or wrong configuration
bit 0 = load output ON
bit 1 = short circuit
bit 2 = overload
bit 3 = low voltage
bit 4 = reserve
bit 5 = reserve
bit 6 = limit value current
bit 7 = event / or button pressed
»True« means the status is active.
Load current
channel 1
1 HighByte
2 LowByte
UInt16 0 ... 65535
A standardised 16-bit-value with a resolution of 10 mA is made
available.
Example for calculation of the measuring value:
value (150)/100 =^ 1.50 Amps
Load voltage
channel 1
3 HighByte
4 LowByte
UInt16 0 ... 65535
A standardised 16-bit-value with a resolution of 10 mV is made
available.
Example for calculation of the measuring value:
value (2512)/100 =^ 25.12 Volt
Status channel 2
5
byte
0 ... 255
0xFF (255) =^ no device available, wrong configuraiton or 1-channel
device used
bit 0 = load output ON
bit 1 = short circuit
bit 2 = overload
bit 3 = low voltage
bit 4 = reserve
bit 5 = reserve
bit 6 = limit value current
bit 7 = event / or button pressed
»True« means the status is active.
Load current
channel 2
6 HighByte
7 LowByte
UInt16 0 ... 65535
A standardised 16-bit-value with a resolution of 10 mA is made
available.
Example for calculation of the measuring value:
value (150)/100 =^ 1.50 Amps
Load voltage
channel 2
8 HighByte
9 LowByte
UInt16 0 ... 65535
A standardised 16-bit-value with a resolution of 10 mV is made
available.
Example for calculation of the measuring value:
value (2512)/100 =^ 25.12 Volt
fig. 13: Input data circuit protector
