Description
Master SDI-12 Commands
VibWire-108 Response
Acknowledge active
a!
a\r\n
Send ID:

provided to complement SDI-12 protocol
aI!            SDI12SEND 5 “0I!”
a13KEYNESCOVibWire-1080001\r\n

Part Description assigned by Keynes
Address query

identifies  instrument address
and commonly used on single instrument
operations only.
?!        


Used to make command set SDI-12 compatible
a\r\n

Where a = number 0 - 9 for SDI-12
           0 -9   letters  a - z   for RS485
                               A - Z
change Address:

used to change instrument address from default to new one for network operations
aAb!

a = initial address     b = new address
b\r\n

a : b     = number   0 - 9 or a - z
Start Measurement - Not Supported DT80

instruct an instrument to make measurement
aM!

a = address of instrument
a0608\r\n

instrument with address a returns 8 x vibwire & 8 x temp after 60 seconds
Concurrent measurement:

Used for polling multiple instruments on a network to start to make readings. This command frees RS-485 bus for other devices
aC!

start measurement instrument address  a

a06016\r\n

initial response only after receipt of instruct and no response when data ready to be sent.
Send data

data returned  
aND! = Vib + Vib + Therm + Therm
and has same format for each command
aD0! aD1! aD2! or aD3!

aD0!  = channel 0 and 3   VibWire Sens
aD1! =  channel 4 and 7   VibWire Sens
aD2! =  channel 0 and 3   Therm/analog
aD3! =  channel 4 and 7   Therm/analog
+xxxx.x+xxxx.x+xxxx.x+xxxx.x\r\n
Table Of Commands

The following commands are all those supported by the VibWire-108-SDI12 for use on the SDI-12 and 485 multi-drop serial  networks.

See   http://www.keynes-controls.com/vibwire/usermanualv103.pdf

for additional information on how to program and use the VibWire-108 range of interfaces

Comm Port Settings - SDI-12 & RS485 Network

Communication ports Settings for SDI-12 & RS485 network.  1200 baud 8 bit no parity



Changing the ID Number (address) under SDI-12 Commands

The following example demonstrates how to change the instrument ID number from the default factory setting 0 to 5.

Use the command ‘aAb’    where a = Start ID  b = Final ID

master sends:  ‘0A5’   Instrument responds 5\r\n    Return New Line   (5 representing new ID number)



Factory Settings

Unless otherwise specified the VibWire-108 is default factory set to ID = 0 with comm port settings 1200 baud  8 Bit no parity

8 vibrating wire sensors and 8 analogue inputs.


SDI-12 Command Summary