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4.1 Protocols
Request Message Header With "S5" Protocol
In "S5" mode, all data in the message header are represented in hexadecimal
fashion. All messages start with two zero bytes (
(ED or AD), data block address, data word address and two coordination flags.
AD and ED Message Descriptions:
AD messages (SEND messages) consist of message header (10 bytes) followed
by data. Response message contains a 4-byte status information.
ED messages (FETCH messages) consist of message header (10 bytes).
Response message comprises 4-byte status information and requested data.
22
Byte No.
Meaning
1
00
2
00
3
Message type (ED or AD)
4
5
Data block address = Scale number
6
Data word address = Command code
7
Data length (> 1) in words
8
9
Coordination flag
10
To keep configuration work down and ensure maximum data
safety, value FF is expected for every byte.
11 ...
Data; length indicated in 7th and 8th byte. (At least one data word must be
sent.)
BV-H2359GB/0902
Computer, PC Coupling
) followed by message type
DISOMAT Opus, Satus, Tersus, Data Communication
© Schenck Process
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