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Flintec MCS-64 ModbusOnEthernet User Manual

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Manual MSC-64: Modbus on Ethernet

5.2 Calibration Commands – CE, CM, CI, DS, DP, CZ, CG AZ, AG, ZT, FD, CS

Note: TAC represents Traceable Access Code (calibration counter).


CE

TAC counter reading

[ Register = 2204, Type = Int32 ]

With this command you get the TAC counter reading or you can enable a calibration sequence.

Master (PC / PLC) sends

Device responds

Result

CE

E+00017 (example)

Request: TAC-counter CE 17

CE_17 OK

Calibration sequence active

This command must be issued PRIOR to any attempt to set the calibration parameters CZ, CG
etc. In legal for trade applications the TAC counter can be used to check if critical parameters
have been changed without re-verification. After each calibration the TAC counter increases by 1.


CM

Set maximum output value

[ Register = 220C, Type = Int32 ]

This command is used for setup the maximum output value. Permitted values are between
1…199999.

Master (PC / PLC) sends

Device responds

Result

CM M+30000

Request: CM = 30000

CE

E+00017 (example)

Request: TAC-counter CE 17

CE_17 OK

Calibration sequence active

CM_50000 OK

Setting: CM = 50000

This value will determine the point at which the output will change to “oooooo”, signifying over-
range.

Note: The range, in which a scale can be set to zero (SZ) or automatic zero tracking (ZT) is
active, is +/- 2% of CM value.

Factory default: CM = 199999.


CI

Set minimum output value

[ Register = 220E, Type = Int32 ]

This command is used for setup the min. allowable output value. Value range is -199999 to 0.

Master (PC / PLC) sends

Device responds

Result

CI I-300

Request: CI = -300

CE

E+00017 (example)

Request: TAC-counter CE 17

CE_17 OK

Calibration sequence active

CI_-10000 OK

Setting: CI = -10000

This value will determine the point at which the output will change to “uuuuuu”, indicating

under-

range.

Factory default setting: -9000.