DLP-IO8-G DLP Design Inc, DLP-IO8-G Datasheet - Page 4

• Manufacturer Part Number: DLP-IO8-G
• Description: MODULE DATA-ACQUISITION 8-CH
• Manufacturer: DLP Design Inc

Specifications of DLP-IO8-G

• Module/board Type: Data Acquisition, 8-Channel
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: USB
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 813-1010; DLP-I08-G

Ping Command
Note 1 – Data is returned in either the form of ASCII characters (ex: 1.25V, 78.2°F) or binary (raw data)
depending upon the current mode. The power-up default mode is ASCII mode such that data is easily read
using a terminal emulator program.
Note 2 – Requires DS18B20 digital temperature sensor (purchased separately). See Section 7.0 of this
document for connection details.
7.0 TEMPERATURE
Up to eight DS18B20 digital temperature sensors can be connected to the DLP-IO8. For best performance, use
Cat 5 type computer cable to connect the sensors to the DLP-IO8. Two pairs of wires in the Cat 5 cable are
required for the connection. The first pair is for Power (5V) and Ground, and the second pair is designated as
Data and Ground. In addition, a pull-up resistor is required for the data line of approximately 1.5K Ohms.
Figure 1 shows an example of this connection using I/O Channel 1:
The first time temperature data is requested, a value of 999.99° (0xFF x 2 if in Binary Mode) is returned.
Subsequent reads will return valid temperature data if a temperature sensor is properly configured and
connected to the specified I/O port. If no sensor is connected, a Temperature command will always return
999.99°.
Note 3 – Cat5 cable lengths of greater that 100 feet may require a pullup resistor value of less than 1.5K Ohms
in order to achieve usable rise times at the sensor. The minimum safe resistance for the pullup resistor is 240
Ohms.
L
`
;
\
‘
Rev. 1.4 (April 2007)
DLP-IO8
0x5C
0x4C
0x3B
0x60
0x27
Return ASCII
Return Binary
Set °F
Set °C
Issue Ping
Default setting; nothing returned (Accent Grave character just left of the
1 key)
Nothing returned
Default setting; nothing returned
Nothing returned
Q (0x51) will be returned if the DLP-IO8 is found on the selected port
(Apostrophe character just right of the ; key)
FIGURE 1
4
Pin 1
DS18B20
© DLP Design, Inc.
2. DATA
3. VCC
1. GND