PCB Piezotronics 441A101, Инструкция по установке и эксплуатации

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443B101/443B102 8
Manual 19854 Rev. D
ECN 50523
The Format of a NAK Message
Reason
Byte
Description
‘C’ Check sum error in message received from external
host.
‘D’ Data overflow error – the size of the data field was
larger than the message buffer. The buffer is 95
bytes long.
‘F’ A framing error occurred – ETX was received before
it was expected.
‘I’ Check sum error occurred while communicating
with internal module.
‘T’ Time-out – message not sent, rack/slot address
may be incorrect.
NAK Reason Bytes
Command format is shown below:
Module Type Three ASCII printable characters. This field identifies the type of module the command
is meant for. For the 443B series, this will be either C01 (for 443B101) or C02 (for
443B102).
Module
Command Four printable ASCII characters. This field identifies the command for the module.
Data Field Contains any data associated with the command.
Start
Byte
(0x02)
NAK
(0x15)
Reason
Byte
End
Byte
(0x030
Checksum
Module
Type
Module
Command
Data Field