Process control, Other and Communication instructions

Introduction

Converting a PL7 application into a Control Expert application generates certain differences, which are described in the following paragraphs.

IN, OUT, INOUT parameters

In Control Expert, for all that use input, output and input/output parameters (IN, OUT and INOUT), the order of these parameters has been modified.

Example: in PL7, the order of the parameters is as follows: IN, OUT, INOUT.

In Control Expert, this becomes: IN, INOUT, OUT.

The EFs concerned by this modification are the following:

Process control instructions		Other instructions		Communication instructions
PL7	Control Expert	PL7	Control Expert	PL7	Control Expert
PID	PID_INT	FTOF	FTOF	DATA_EXCH	DATA_EXCH
PWM	PWM_INT	FTON	FTON	INPUT_CHAR	INPUT_CHAR
SERVO	SERVO_INT	FTP	FTP	OUT_IN_CHAR	OUT_IN_CHAR
		SCOUNT	SCOUNT	PRINT_CHAR	PRINT_CHAR
		FPULSOR	FPULSOR	RCV_TLG	RCV_TLG
				READ_ASYN	READ_ASYN
				READ_GDATA	READ_GDATA
				READ_VAR	READ_VAR
				SEND_REQ	SEND_REQ
				SERVER	UNITE_SERVER

NOTE: When you used a TSX series 7 PLC’s PL7-2 or PL7-3 with the function DATA_EXCH, in reception, APP.NUM is interpreted as APP and the message with this address is managed by the first DATA_EXCH executed after reception.

NOTE: FTOF, FTON and FTP are not converted for M340 targets.

The following diagram shows the example of the communication instruction OUT_IN_CHAR.

The following table describes the parameters of the communication instruction OUT_IN_CHAR.

Input parameters (IN)	Input/output parameters (INOUT)	Output parameters (OUT)
ADR	GEST	RECP
TYPE
EMIS

The ST representation of the instruction OUT_IN_CHAR in PL7 is as follows:

OUT_IN_CHAR (Address, Mode, Data_to_Send, Received_Data, Management_Param).

The ST representation of the instruction OUT_IN_CHAR in Control Expert is as follows:

OUT_IN_CHAR (Address, Mode, Data_to_Send, Received_Data, Management_Param).