Parker Hannifin VIX500IM Manuel d'utilisateur télécharger pdf (Page 122)

6. COMMAND REFERENCE 115

6. Command Reference

Command Description

Each command has a simple 1 to 7 character name usually an abbreviation of its full

descriptive title. Listed commands are in alphabetic order with any non-alphabetic symbols

appearing last.

Each individual description will include a one-line header giving the abbreviated name

followed by its full name. The following lines give the command syntax, units of

measurement, range of values, any default value and a reference to other related

commands. Where commands contain a list of parameters, a simple layout displays only the

syntax of the command.

Every command requires an address. Where several drives need to respond to a

common set of global commands, prefix each command with the address 0. To prevent

spurious feedback any report or read command using address 0 will be ignored. Note a

drive will ignore a command missing an address prefix.

Where commands (such as IF, R, TR, and W) include a system variable it is treated as a

command parameter. System variables store internal drive values and settings. Each

variable is capable of being read and tested, and some may be written to, but they are all

dedicated for a particular use by the system and cannot be used for storing user data within

a program.

Command Syntax

Generally, a command’s syntax consists of an address ‘a’ followed by the command name.

Parenthesis containing the commands’ parameters or simply the range parameter ‘n’ follows

this. Within the parenthesis form of command, a comma separates each parameter and

italics indicate any optional parameters.

Commands not requiring any parameter string have the syntax shown in Figure 6-1.

aARMn

Range parameter

Command name

Address prefix

Figure 6-1. Simple Command Syntax

Commands, which include a parameter string, can be simple one parameter commands

such as GOSUB or CLEAR where the single parameter is a label, or multi-parameter

commands containing a string of parameter values. Figure 6-2 shows both styles of

parameter commands.

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Parker Hannifin VIX500IM Manuel d'utilisateur Page 122