tDGH Can Users Guide
Seabird 18s pH sensor setup
Note: MUST have pH sensor configured correctly. The swFOCE team has setup the sensor with different options (not sure, but I believe they have setprompt=1)
setoutputformat=0
setexecuted=0
setecho=0
setbaud=38400
setprompt=0
tDGH Connections
Power Connection: Using benchtop cable adapter, connect to +24v 300mA capable power supply. tDGH can run +12v to +24v.
Serial Connection: Connect tDGH can to a PC serial port (USB to serial also works) with settings of 115200, 8N1. This is configurable in the DGH software by DGH gen2 config.txt file typically found on the desktop of the PC. Using Teraterm or Hardware Manager, figure out which COM port is attached to the tDGH can and configure this in the DGH gen2 config.txt file (hereafter referred to as the config file.
Serial Protocol
Note: the serial protocol can be used to manually test the tDGH can without using the Labview GUI. Using a serial terminal such as TeraTerm (download http://ttssh2.sourceforge.jp/), configure the serial port for 115200 8N1
- Power All (0=off, 1=on)
- $1PA0<CR/LF>
- response
- 0<CR/LF>
- Channel 1 Power Control = 0 (Off)
- $1PC0<CR/LF>
- Response:
- 0<CR/LF>
- Channel 1 Power Control = 1 (On)
- $1PC1<CR/LF>
- Response:
- 1<CR/LF>
- Channel 1 Power Read
- $1PR<CR/LF>
- Response:
- 1<CR/LF>
- Read Block
- $1RB<CR/LF> read temperature sensor block (4 channels)
- $5RB<CR/LF> read pH sensor block (Seabird 18s)
- Response:
- *+02712.00
- *+00200.00
- *+00125.76
- *+00347.95
- Read Data
- $1RD<CR/LF> read tDGH channel 1 (temperature ch 1)
- $2RD<CR/LF> read tDGH channel 2 (temperature ch 2)
- $3RD<CR/LF> read tDGH channel 3 (temperature ch 3)
- $4RD<CR/LF> read tDGH channel 4 (temperature ch 4)
- $5RD<CR/LF> read tDGH channel 5 (pH sensor ch 1)
- $6RD<CR/LF> read tDGH channel 6 (pH sensor ch 2)
- $7RD<CR/LF> read tDGH channel 7 (pH sensor ch 3)
- $8RD<CR/LF> read tDGH channel 8 (pH sensor ch 4)
- $9RD<CR/LF> read tDGH channel 9 (pH sensor ch 5)
