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Saia-Burgess Controls AG
2.1
Blockschaltbild
PCD
I/O Bus
Handbuch PCD2.F27x0 & PCD3.F27x│Dokument 27/603; Ausgabe DE 05│2014-03-18
I/O Module
I/O Bus
Interface
µController
Tx
Rx
Tx
Rx
Bus Arbitration
M-Bus
power supply
Transceiver ×2
Short detection
MBUSA1
Temp. protection
Remove disturbance
MBUSA2
Level shift
MBUSB1
U modulation
MBUSB2
I conversion
Modulübersicht
Blockschaltbild
2
Connector
24Vext
GND
MBUSA1
MBUSA2
MBUSB1
MBUSB2
LEDs
Power ON
2× Tx
2× Rx
2× Status
Short detect
2-2
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