Thermo Scientific ULT-80 Installation & Operation Manual page 58

Table 1 (All bytes are in hex)
FUNCTION
READ
Read Internal Temperature
Read External Sensor
Read Setpoint (control point)
Read Low Temperature Limit
Read High Temperature Limit
Read Proportional Band (P)
Read Integral (I)
Read Derivative (D)
SET
Set Setpoint (control point)*
Set Low Temperature Limit*
Set High Temperature Limit*
Set Proportional Band
(P=1-99.9)
Set Integral (I = 0-9.99)
Set Derivative (D= 0-5.0)
BATH ERROR RESPONSES
Bad Command
Bad Checksum
MISCELLANEOUS
Request Acknowledge
command bytes shown in bold
qb = qualifier byte
d1,d2 = 16 bit signed integer of the value being sent or received
cs = the checksum of the string (see text)
ed = echo back of the command byte as received
v1,v2 = protocol version
* = limited to the range of the bath
Table 2
QUALIFIER BYTE
10 hex 0.1 precision, no units of measure
20 hex 0.01 precision, no units of measure
11 hex 0.1 precision, °C units
Example: The temperature of 45.6 °C would be represented by the qualifier 11 hex, followed by the 2 bytes 01
C8 hex (456 decimal).
MASTER SENDS
CA 00 01 20 00 DE
CA 00 01 21 00 DD
CA 00 01 70 00 8E
CA 00 01 40 00 BE
CA 00 01 60 00 9E
CA 00 01 71 00 8D
CA 00 01 72 00 8C
CA 00 01 73 00 8B
CA 00 01 F0 02 d1 d2 cs
CA 00 01 C0 02 d1 d2 cs
CA 00 01 E0 02 d1 d2 cs
CA 00 01 F1 02 d1 d2 cs
CA 00 01 F2 02 d1 d2 cs
CA 00 01 F3 02 d1 d2 cs
N/A
N/A
CA 00 01 00 00 FE
- 30 -
BATH RESPONDS
CA 00 01 20 03 qb d1 d2 cs
CA 00 01 21 03 qb d1 d2 cs
CA 00 01 70 03 qb d1 d2 cs
CA 00 01 40 03 qb d1 d2 cs
CA 00 01 60 03 qb d1 d2 cs
CA 00 01 71 03 qb d1 d2 cs
CA 00 01 72 03 qb d1 d2 cs
CA 00 01 73 03 qb d1 d2 cs
CA 00 01 F0 03 qb d1 d2 cs
CA 00 01 C0 03 qb d1 d2 cs
CA 00 01 E0 03 qb d1 d2 cs
CA 00 01 F1 03 qb d1 d2 cs
CA 00 01 F2 03 qb d1 d2 cs
CA 00 01 F3 03 qb d1 d2 cs
CA 00 01 0F 02 01 ed cs
CA 00 01 0F 02 03 ed cs
CA 00 01 00 02 v1 v2 cs