Manual

ManualsBrandsRockwell Automation ManualsEquipment1746-BAS-T SLC 500 Basic Basic-T Modules

Publication 1746-UM004B-EN-P - December 2005

4-18 Programming Overview

Figure 4.5 Data Flow Between the SLC processor and Port DH485 of the Module

In addition, the commands in the following table provide status of the

data transfer between the SLC processor and port DH485 of the

module.

For more information regarding the use of these commands, refer to

the BASIC Language Reference Manual, publication 1747-RM001.

CALL 91 Transfers words 0...39 of the module output buffer to a remote DH485 data

file.

CALL 92 Transfers the data from a remote DH485 interface file to words 0...39 of the

module input buffer.

CALL 93 Transfers words 0...39 of the module output buffer to a remote DH485

interface file.

CALL 118 Allows unsolicited writes from a remote SLC or PLC node.

Command Purpose

SLC Processor

256 bytes

PORT DH485

CALL 28

CALL 27

CALL 118

INPUT

CALL 14/15

CALL 24/25

CALL 90/92

CALL 84

CALL 91/93

CALL 85

256 bytes

COMMON

INTERFACE INPUT

FILE

COMMON

INTERFACE

OUTPUT FILE

ASCII OUTPUT

QUEUE

BASIC INPUT

BUFFER

BASIC

OUTPUT

BUFFER

ASCII INPUT

QUEUE

Command Purpose

MODE Sets the port parameters of PRT1, PRT2, and DH485.

CALL 86 Checks the remote write status of the DH485 common interface file.

CALL 87 Checks the remote read status of the DH485 common interface file.