Campbell Scientific CR800 and CR850 Measurement and Control Systems - Manual (Page 488)

Appendix A. CRBasic Programming Instructions
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SerialInBlock
Stores incoming serial data. This function returns the number of bytes received.
Syntax
SerialInBlock(ComPort, Dest, MaxNumberBytes)
SerialInChk
Returns the number of characters available in the datalogger serial buffer.
Syntax
SerialInChk(ComPort)
SerialInRecord
Reads incoming serial data on a COM port and stores the data in a destination
variable.
Syntax
SerialInRecord(COMPort, Dest, BeginWord, NBytes, EndWord,
NBytesReturned, LoadNAN)
SerialOpen
Sets up a datalogger port for communication with a non‐PakBus device.
Syntax
SerialOpen(ComPort, BaudRate, Format, TXDelay, BufferSize)
SerialOut
Transmits a string over a datalogger communication port.
Syntax
SerialOut(ComPort, OutString, WaitString, NumberTries,
TimeOut)
SerialOutBlock
Send binary data out a communications port. Used to support a transparent
serial talk‐through mode.
Syntax
SerialOutBlock(ComPort, Expression, NumberBytes)
A.12 Peer-to-Peer PakBus Communications
Read More! See section PakBus Overview
(p. 334)
for more information. Also see
Campbell Scientific PakBus® Networking Guide available at
www.campbellsci.com.
PakBus ® is a proprietary network communications protocol designed to maximize
synergies between Campbell Scientific dataloggers and peripherals. It features
auto-discovery and self-healing. Following is a list of CRBasic instructions that
control PakBus
® processes. Each instruction specifies a PakBus ® address and a
COM port. The PakBus ® address is a variable that can be used in CRBasic like
any other variable. The COM port sets a default communications port when a
route to the remote node is not known. The following COM port arguments are
available:
• ComRS-232
• ComME