Connector Description - Galil Motion Control DMC-18 2 Series User Manual

Table of Contents

Accessing extended I/O

When configured as an output, each I/O point may be defined with the SBn and CBn commands

(where n=1 through 8 and 17 through 80). Outputs may also be defined with the conditional

command, OBn (where n=1 through 8 and 17 through 80).

The command, OP, may also be used to set output bits, specified as blocks of data. The OP command

accepts 5 parameters. The first parameter sets the values of the main output port of the controller

(Outputs 1-8, block 0). The additional parameters set the value of the extended I/O as outlined:

OP m,a,b,c,d

where m is the decimal representation of the bits 1-8 (values from 0 to 255) and a,b,c,d represent the

extended I/O in consecutive groups of 16 bits. (values from 0 to 65535). Arguments which are given

for I/O points which are configured as inputs will be ignored. The following table describes the

arguments used to set the state of outputs.

Argument

For example, if block 8 is configured as an output, the following command may be issued:

OP 7,,,,7

This command will set bits 1,2,3 (block 0) and bits 65,66,67 (block 8) to 1. Bits 4 through 8 and bits

68 through 80 will be set to 0. All other bits are unaffected.

When accessing I/O blocks configured as inputs, use the TIn command. The argument 'n' refers to the

block to be read (n=0,2,3,4,5,6,7,8 or 9). The value returned will be a decimal representation of the

corresponding bits.

Individual bits can be queried using the @IN[n] function (where n=1 through 8 or 17 through 80). If

the following command is issued;

MG @IN[17]

the controller will return the state of the least significant bit of block 2 (assuming block 2 is configured

as an input).