GE K400 user manual Serial Communication, DBC Series Serial Commands Protocol

4 SERIAL COMMUNICATION

Using the standard digital RS232 interface, the calibrator can be controlled from a remote computer. By sending commands via the RS232 interface, the calibrator automatically retrieves temperature readings or modifies any parameter settings (temperature set-point, temperature reference selection, ramp/step/preset generation etc.).

4.1DBC Series - Serial Commands Protocol

	ABBREVIATIONS:
aa:	Two digit DBC address in ASCII format. (i.e.. 01).
	Send 00 to overwrite every other address.
par:	Parameter. Command depending format.
R/W:	Read and Write command

R:Read Only command

n.a.: Not Applicable

[ ]: Every parameter enclosed in square bracket are optional

Command	Command	Parameters	Description	Model
Flow				(TS/TC)
Write	*aaEM=par	Par = 0 Absolute error °C	R/W - Error Computation Mode	TC
Read	*aaEM?	1% of span	(MM command to set CAL mode)	TC
Query	!aaEM=par	2% of readings		TC
Write	n.a.	Par = floating point	R – Get Error Value	TC
Read	*aaER?		(Mode selected by EM command)
Query	!aaER=par
Write	*aaICc=par	c =1 Regulator (optional)	R/W –Input Channel	TS
Read	*aaICc?	2 Measure		TC
Query	!aaICc=par	par = 0 NONE	No measure	TS
		1 n.a.
		2 T/C +CJ	Thermocouple + Cold Junction	TC
		3 T/C no CJ	Thermocouple without Cold Junct.	TC
		4 RTD 3 Wires	Thermoresistors 3 wires	TS/TC
		5 RTD 4 Wires	Thermoresistors 4 wires	TS/TC
		6 RES 3 Wires	Resistors up to 400 Ω 3 wires	TC
		7 RES 4 Wires	Resistors up to 400 Ω 4 wires	TC
		8 mV	mV input	TC
		9 n.a.
		10 n.a.
		11 n.a.
		12 mA	mA input	TC
		13 n.a.
		14 Switch	Switch mode	TS/TC
		15 n.a.
		16 n.a.		TS/TC
		17 Reference RTD 4 wires	User Thermoresistors 4 wires	TS/TC
		18 V	Volt Input	TC

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