Reference Manual

PMAC 2 Software Reference

264 PMAC On-Line Command Specification

2000 ; PMAC reports value

See Also

On-line commands MACROAUXREAD, MACROAUXWRITE

PLC Program commands MACROAUXREAD, MACROAUXWRITE

MACROAUXREAD

Function

Read MACRO auxiliary parameter value

Scope

Global

Syntax

MACROAUXREAD{NodeNum}{ParamNum}{Variable}

MXR{NodeNum}{ParamNum}{Variable}

where:

• {NodeNum} is an integer constant from 0 to 15 specifying the slave number of the node

• {ParamNum} is an integer constant from 0 to 65535 specifying the auxiliary parameter

number for this node

• {Variable} is the name of the PMAC variable (I, P, Q, or M) into which the

parameter value is to be copied

Remarks

This command permits PMAC to read auxiliary register values from slave nodes across the

MACRO ring. The command must specify the node number of the slave node, the auxiliary

parameter number at this node, and the name of the PMAC variable to receive the value.

Only one auxiliary access (read or write) of a single node can be done on one command line.

In order to access the auxiliary registers of a MACRO node n, bit n of I1000 must be set to 1.

If the slave node returns an error message or the slave node does not respond within 32 servo

cycles, PMAC will report ERR008. Bit 5 of global status register X:$0003 is set to report

such a MACRO auxiliary communications error. Register X:$0798 holds the error value. It

is set to $010000 for a timeout error, or $xxxxFE if the slave node reports an error, where

xxxx is the 16-bit error code reported by the slave node.

Example

MACROAUXREAD1,24,P1 ; Read Node 1 Parameter 24 into P1

MXR5,128,M100 ; Read Node 5 Parameter 128 into M100