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IM 50.560CA UA (B/4-03)
DEPOLOX
®
3
PLUS
RESIDUAL ANALYZER
58
3.7.3
Specification of Bus Interface
1 Synchronization mode:
Asynchronous
2 Transmission rate:
19200 Baud
3 Data format (asynchronous):
- Start bit:
1 Bit
- Data bit:
8 Bit
- Parity bit:
even
- Stop bit:
1 Bit
4 Signal polarity:
Differential voltage interface
Logical “1” = (A-B >= 0.2V)
Logical “0” = (A-B <= -0.2V)
5 Handshake:
No handshake because of request
control with fixed blocks
6 Transmission code:
USF/W&T-Protocol (master-slave)
multipoint communication,
maximum 32 users
7 Galvanically not isolated
3.7.4
Transmission Protocol
For the communication between master (active user, e.g., computer) and
slave (passive user), two different kinds of frames are used:
•
Request - Frame
•
Set - Frame
The slave answers to these frames with the following frames:
•
Answer frame
•
Positive confirmation
•
Negative confirmation
The bytes of these frames always have the same formats:
•
1 Start bit (always “0”)
•
8 Data bits
•
1 Parity bit (even)
•
1 Stop bit (always “1”)
Содержание DEPOLOX 3 PLUS
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