PCB Piezotronics 441A35 - Page 94

441A152 PEAK METER 9
Manual 23528 Rev. A
ECN 50523
Start Byte (0x02)
NAK (0xl5)
Reason Byte
End Byte (0x030
Checksum
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
Module
Command
Data Field
Module Type
Three ASCII printable characters, this field identifies the type of module that
command is meant for.
Module
Command
Four printable ASCII characters, this field identifies the command for the module.
Data Field
Contains any data associated with the command.