ROTRONIC HygroLab - Manual (Page 39)

IN-E-HyLab-V4_11
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
Instruction Manual
Document Type
HygroLab bench top indicator version 4:
instruction manual
Document title
Page 39 of 51
© 2006; Rotronic AG IN-E-HyLab-V4_11
b HygroLab 2 {b00RDD}+CR – assuming the address is 0
B HygroLab 3 {B00RDD}+CR – assuming the address is 0
R M33 series {R00RDD}+CR – assuming the address is 0
CR=Chr(13)
Special situations (single instrument)
Using address 99 in a data request causes any instrument with any address to answer. For this
reason, address 99 should not be used when several instruments are connected to a network.
Address 99 can be useful when trying to communicate with a single instrument of unknown
address. The address is returned as part of the answer string.
When the product ID is unknown, it can be replaced with a blank in the command. The product ID
is returned as part of the answer string.
Example: { 99RDD}+CR
Examples
Data can be read from the instrument directly connected to the COM port of the PC (RS232) as
well as from any instrument that is networked (RS485).The following examples are for the
HygroLab. The same commands can be used for other instruments with similar capabilities by
substituting the appropriate values for the product ID and address.
1) Read %RH and temperature from the HygroLab 2 with address 01 (2 probes), directly connected
to the PC COM port (RS232):
data request: {b01RDD}+CR
answer: {b01RDD 0025.01;0016.89;0024.57;0019.84;----.--;----.--;----.--;----.--;#C
note: 0025.01: humidity probe 1 (%RH)
0016.89: temperature probe 1 (
°C as per instrument configuration)
0024.57: humidity probe 2 (%RH), etc.
2) read %RH, temperature and computed parameter
data request: {b01RDD0;}+CR
answer: {b01RDD 0025.90;0015.82;-003.69;0024.47;0019.88;-001.00;----.--;----.--;----.—S
note: 0025.90: humidity probe 1 (%RH)
0015.82: temperature probe 1 (
°C as per instrument configuration)
-003.69: dew point probe 1 ( °C as per instrument configuration), etc.
3) Read %RH and temperature from the HygroFlex 3 (1 probe) with address 00, connected by
RS 485 to the HygroLab 2: