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Van ’t Hoffstraat 12
2665 JL Bleiswijk, The Netherlands
T. 31 (0) 10 522 43 73
F. 31 (0) 10 521 19 41
E-mail: [email protected]
Website: www.tamson.com
VAT: NL 80 66 34 984 B01
Bank account no.: Rabobank 16 01 00 046
Chamber of commerce 27 16 95 41
IBAN Code: NL95 RABO 0160100046
Tamson Instruments bv
tv2000-4000mkII-4000DC-man.doc Rev. 2.3 UK 9-15
$41 : Ratio process in progress
$42 : waiting for PV<SP-tuneoffset after ratio
$50 : Start of successive approximation process
$51 : Sucessive approximation stabilisation delay
$52 : Successive approximation in progress
$53 : end of sucessuve approximation stage
$60 : Proportional mode (subject to change - other values to be defined)
[CS<n>]
Sets state of control algorithm
[HP]
Returns current heater power percentage
HP<nn> : sets heater percentage to <nn> - this command is only useful if control algorithm suspended with
CS command.
[AC]
Returns 1 when a new temperature value is available, 0 if no new has been measured since the
last PV or PVH command. Cleared by PV or PVH command. Used for external PC control synchronization.
PV Returns Process Value with unit, no decimals. 23C or 74F
[PVF]
returns temp as follows :
Use PVF to return a decimal value with 7 decimal digits, e.g.
12.345342C, works for degrees Centigrade, and degrees Fahrenheid. Only first three are significant. When
reading is in degree Fahrenheit character F indicates the unit i.e. 73.3961328F
When temperature is negative, minus sign appears i.e. -1.6955468F
[PP]
returns proportional band value. Proportional band is 100/gain
[PI]
returns integrating value
[PD]
returns derivative value
PID range and set:
Pb = setting 1..999
I = 0..999
D = 0..999
[PP]
Followed by value, or space and value, will set proportional band. I.E. PP25 wil set Proportional
band to 25.
[PI]
Followed by value, or space and value, will set integrating value. I.E. PI16 will set Integratin g value
to 16.
[PD]
Followed by value , or space and value, will set integrating value. I.E. PD2 will set Derivative value
to 2.
The TMC70 contains 4 independent PID sets. Each set can be enabled using the TMC70.EXE program and
can have its own name i.e “water”, “silicone oil” or “methanol”.
However when the command PP, PI, or PD
is used to set a value, automatically set 4 is used.
So PID set4 is reserved for RS232 operation and is
activated when approached from RS232.
[SP]
Set point temperature
SP, Set point temperature is returned i.e. 20.22
SP22.50 sets set point temperature to 20.50°C
When controller displays temperature in °F, SP20.50 sets the set point to 20.50°F
SP22.555 results in error code "10"
