Delta-electronics DELTA DUP-B Manual de usuario descargar pdf (Pagina 380)

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Chapter 3 Creating and Editing Screens

 GETCHARS (Get Characters by COM Port)

Equation

Var1 = GETCHARS (Var2, Var3, Var4)

Explanation

This command gets characters by COM port. Var1 is the response value after the

communication, Var2 is the starting address of transmission data, Var3 is the data

length, and Var4 is the allowance communication time (unit is ms). The result will be

stored in Var1.

Remark

 Var1: Response value after communication

1: Completed normally

0: Failed

 Var1 and Var2 can be internal memory only. Var3 and Var4 can be internal

memory or constant.

Example

Get three consecutive WORD data starting from $1 and store the result in $0.

 SELECTCOM (Select COM Port)

Equation

SELECTCOM (Var1)

Explanation

This command is used to select COM port. When not connecting to the external

controller (set PLC to NULL) in Options > Configuration in Screen Editor software

program, the user can use two COM ports (0:COM1, 1:COM2, 3:COM3 (for some

models only)) at the same time.

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Delta-electronics DELTA DUP-B Manual de usuario Pagina 380

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