Hanna Instruments HI 700 Series - Manual (Page 18)

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Note The controller answers to the GET command with the same
data format explained in the SET command.
Following are examples of answers:
1) “03+01200”
The controller with process ID number 03 says that its
current setpoint is +12.00 mS.
2) “01UE71022225”
The controller with process ID number 01 says that it is a
HI710222 model with firmware release 2.5.
The minum delay between the last received character and
first character of the answer is 15 ms.
When the controller answers to the ECR, TDR and TMR com-
mands, the reading is sent as ASCII string followed by a
character indicating the control and alarm status of the con-
troller. This character can assume the following values:
• “A”, control and alarm are ON;
• “B”, control and alarm are ON, and need update con-
troller setup (GET commands);
• “C”, control is ON and alarm is OFF;
• “D”, control is ON and alarm is OFF, and need up-
date controller setup (GET commands);
• “N”, control and alarm are OFF;
• “M”, control and alarm are OFF, and need update
controller setup (GET commands);
For example, a possible answer to the TMR command is:
“0310.7C”
meaning that the current temperature reading is 10.7°C, the
control action is active, no alarm condition is present and
controller setup is updated on PC.
“0310.7D”
meaning that the current temperature reading is 10.7°C, the
If asking for last calibration data and the controller was never
calibrated, it answers with “0”; e.g. “010”.
If the controller was calibrated, it answers with “1” followed
by the calibration data.
The Data field of the answer has the following format:
1
• Date: DDMMYY (e.g. “170400” for April 17,2000)
• Time: HHMM (e.g. “1623” for 4:23 pm)
• Cell Costant: ASCII string (e.g. “1200”)
The items in the Data field are separated by blanks.
SETTING THE BAUD RATE
The transmission speed (baud rate) can be selected with the
up and down keys; then press the CFM key to store the new
settings.
Available baud rates are: 1200, 2400, 4800 and 9600 bps.
control action is active, no alarm condition is present and
controller setup is modified (must update controller setup for
PC - GET command for setup items).