Honeywell Krom Schroder BCU 580 - Page 46

BCU 580 · Edition 11.15l 46
Profinet
“Remaining times of the valve proving system”
module (device ➔ controller) – slot 7
Only for BCU..C1.
The module in BCU..C0 contains no information.
This module transfers the remaining time of the valve
proving system from the BCU..C1 to the PLC. The re-
maining time occupies 2 bytes.
The valve check runs parallel to other time-related pro-
cesses, e.g. pre-purge. To display the remaining time
of the valve proving system separately, it is transferred
separately.
Bit Byte n Byte n+1 Data type Format Value
0
Remaining times of the
valve proving system
Word DEC
0–6554
(0–6554 s)
1
2
3
4
5
6
7
“PLC output information” module (device ➔
controller) – slot 8
This module transfers information on signals which the
PLC uses to control the BCU back to the PLC. This al-
lows the signal transfer from the PLC to the BCU to be
checked.
Bit Byte n Format
0 Reset BOOL
1 Burner 1 start BOOL
2 External air ON BOOL
3 Pre-purge ON BOOL
4 Free BOOL
5 menox ON BOOL
6 Open control element, three-point step Open
1)
BOOL
7 Close control element, three-point step Close
1)
BOOL
1)
Only with three-point step control via bus.
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