BCU 580 · Edition 11.15l 44
Profinet
“Burner 1 flame signal” module (device
➔
controller) –slot 2
The flame signal for burner 1 is transferred from the
BCU to the PLC as an analogue value using this module.
The flame signal occupies one byte with values from 0
to 255 (= flame signal from 0 to 25.5 µA).
Bit Byte n Data type Format Value
0
Burner 1 flame signal Byte DEC
0–255
(0–25.5 μA)
1
2
3
4
5
6
7
“Burner 2 flame signal” module (device
➔
controller) –slot 3
The flame signal for burner 2 is transferred from the
BCU to the PLC as an analogue value using this module.
The flame signal occupies one byte with values from 0
to 255 (= flame signal from 0 to 25.5 µA).
Bit Byte n Data type Format Value
0
Burner 2 flame signal Byte DEC
0–255
(0–25.5 μA)
1
2
3
4
5
6
7
“Status signal” module (device ➔ controller) –slot 4
This module transfers the status signals from the
BCU to the PLC. The status signals occupy one byte
(0 to 255). Every status signal is allocated a code. The
allocation is described in the code table “GSD Codes
BCU 580”.
Bit Byte n Data type Format Value
0
Status signals Byte DEC
0–255
(see
Code table “GSD_
Codes_BCU580.xlsx”
at
www.docuthek.com)
1
2
3
4
5
6
7