Integra Codman CereLink Manual Del Usuario página 37

APPENDIX C: DIGITAL DATA STREAMING COMMUNICATION PROTOCOL
The ICP Monitor can stream data through the USB port using a USB to serial communication.
The serial port settings required to connect a PC to the ICP monitor through a terminal application or other customized serial
program are as follows.
• Speed: 115200
• Data: 8 bit
• Parity: none
• Stop: 1 bit
• Flow Control: none
The communication protocol is unidirectional. The ICP monitor will only output data and no responses shall be sent from the
receiving device (i.e., PC Host should be in a "listen only" mode).
The ICP Monitor automatically detects in which USB port the USB/Serial connection is present. Either USB port may be used based
on user preference. The data stream is always active except when the Data Download menu is open. Steaming will resume as soon as
the Data Download menu is closed.
Data packets are transmitted at various frequencies depending on the data type.
Packet Types
Packet Type
ICP Waveform
Mean ICP Trend
System Status
ICP Waveform Packet Description
Description
Start of Packet
Product ID
Device SN
Protocol Version
Packet Type
Sensor Serial Number
Date
Time
ICP Value (1 through 100)
Data Counter
Packet Checksum
End of Packet
Content
1 second of data (100 samples)
1 minute of data (6 samples)
Physiological alarm status
Data markers
Sensor not connected
Sensor not zeroed
Fault condition
String
*
CERELINK
CLKxxxxxxx
V01
ICPWV
SNxxxxxxx
YYYY/MM/DD
HH:mm:ss
(-/+)xxx.x
00001
0xFFFF (initial value)
\r\n
Frequency
1 packet every second
1 packet every minute
1 packet every 30 seconds
Size (bytes)
1
8
10
3
5
9
10
8
6 * 100
5
4
2
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Details
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Waveform data
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100 consecutive values
Increment with each message
Reset when 99999 is reached
CRC16
x^16 + x^12 + x^5 +1
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