User manual

38 Function Description EPSITRON®
787-1662 Electronic Circuit Breaker
Manual
Version 1.0.0
6.6.2 Specific Activation and De-activation of Non-Tripped
Output Channels
A coded pulse pattern must be present to activate and de-activate specific output
channels. The encoded pulse pattern can consist of
• 17 bits or
• 89 bits (with Firmware 2.0 and higher),
which must be transmitted as "Manchester code" (based on IEEE 802.3). Here, a
falling clock pulse denotes a logical zero ("0"), and a rising clock pulse a logical
one ("1").
The first bit to be transmitted has the value "0" and serves as the start bit, after
which either 16-bit or 88-bit user data is transmitted.
No separate pulse signal is applied; the electronic circuit breaker obtains the pulse
signal from the pulse pattern that is received. The circuit breaker is then
synchronized automatically and transmits the current status back via signal output
S2.
Observe the Number of the Output Channels!
The following tables and figures have been granted to:
• 787-1662: output channels 1 … 2 are valid
• 787-1664: output channels 1 … 4 are valid
• 787-1668: output channels 1 … 8 are valid
Invalid bits and bytes will not be analyzed. They will be transmitted in an
undefined state.
The table below provides an overview of the functions for the individual data bits:
Table 20: Bit Allocation for Control Input S1
Bit
Output
channel
Byte
Function
1
START bit, value = "0"
2
Channel 8
Byte 1
Required switching statuses of output channels
"1" = The corresponding output channel is
activated.
"0" = The corresponding output channel is
deactivated.
3
Channel 7
4
Channel 6
5
Channel 5
6
Channel 4
7
Channel 3
8
Channel 2
9
Channel 1