Keyence DL-PD1 Manual de usuario descargar pdf (Pagina 55)

3-6 DP-V1 Service

3-33

- PROFIBUS DP Compatible Network Unit DL-PD1 User's Manual (GT-70A) -

Executing Communication

Calculations other than for standard difference display are effective only on the main unit

(ID: 01). These parameters read the R.V. value (synchronized with the calculation

results) of the main/expansion unit(s) for the main unit to calculate the results.

For example, set the data number (HEX) to "01A3" when you read the value of the

expansion unit on which calculation result of the main unit is based.

Calculations for standard difference display are effective only on the expansion units (ID:

02 to ID: 10). These parameters read the R.V. value (synchronized with the calculation

results) of the main/expansion unit(s) for the expansion unit to calculate the results.

For example, set the data number (HEX) to "03A1" and send the command when

you read the value of the main unit (ID: 01) on which calculation result of the

expansion unit (ID: 03) is based.

This read command is useful when you use the calculation function with the

detection mode set to hold detection (peak hold) and when you read the R.V.

value of the main/expansion unit(s) for calculation as well as the calculation

results.

The read command for the P.V. value can read the held values, while that

for the R.V. value reads the raw value when the command is received.

Therefore, the read R.V. value is not synchronized with the latest values.

This read command can read the R.V. value of each sensor amplifier for

calculating the held values.

The read R.V. values are synchronized with the held values and

eliminates the influence of communication response delay.

*11 The read character string is stored in ASCII code into the remote register.

For "GT7-": RWr03 = 372Dh, RWr02 = 5447h

Reference

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Keyence DL-PD1 Manual de usuario Pagina 55