Instruction Manual

Page 18 Manual MSC-64: Modbus on Ethernet
AZ Absolute zero point calibration [ Register = 2202, Type = Int32 ]
The command AZ is used as reference point for all weight calculations and will setup in mV/V.
Permitted values are ± 32000 (= ± 3.2000 mV/V).
Master (PC / PLC) sends Device responds Result
AZ Z+0.0005
Request:
Zero point @ 0.0005mV/V
CE
E+00017 (example) Request: TAC-counter CE 17
CE_17 OK
Calibration sequence active
AZ_00500 OK
Setting:
new: Zero point @ 0.0500 mV/V
Factory default: 00000 @ 0.0000 mV/V input signal.
AG Absolute gain calibration [ Register = 2200, Type = Int32 ]
The command AG is used as absolute gain (or measuring range) for all weight
calculations and will setup in mV/V. Permitted values are ± 32000 (= ± 3.2000 mV/V).
Master (PC / PLC) sends Device responds Result
AG G+2.0000
Request:
Meas. range 2.000 mV/V
CE
E+00017 (example) Request: TAC-counter CE 17
CE_17 OK
Calibration sequence active
AG_19998_90900 OK
new: Measuring range
1.9998 mV/V @ 90900 d
Factory default: 200000 @ 2.0000 mV/V input signal.
If the AG value has to be set at 2.0000 mV/V, but the load cell capacity is quoted at 2.2 mV/V,
you will have to ratio the load cell capacity down.
Example : A 100kg load cell with an Output at Rated Load of 2.2 mV/V would be equivalent to
90.9 kg @ 2 mV/V (exact 1.9998 mV/V)
ZT Zero tracking [ Register = 2122, Type = Int32 ]
This command enables or disables the zero tracking. Parameter = 0 disables the zero tracking
and parameter = 1 enables the zero tracking. Issuing the command without any parameter
returns the current ZT value.
Master (PC / PLC) sends Device responds Result
ZT Z:001
Request: ZT status (ON)
CE
E+00017 (example) Request: TAC-counter CE 17
CE_17 OK
Calibration sequence active
ZT_0 OK
Setting: ZT = OFF
Zero tracking will be performed only on results less than +/-0.5 d at a rate of 0.4 d/sec, where d =
display step size (see DS command). The zero can only be tracked to +/- 2% of maximum (see
CM command).
In non legal for trade applications you can exceed the limit +/- 2%. If you require for example a
zero tracking range of +/- 10 d then you have to set ZT to be 100 where d is the division size
(which means d * 10).
Factory default: ZT=0