Baldor MN1851 manual Appendix B Command Set, Lin Ascii Command Set General, Mnemonics

Appendix B

Command Set

Lin – ASCII – Command – Set

General

Lin controls use the RS232 communication port (optional RS485) as the Interface. This document describes existing LinDrive/Lin+Drive ASCII terminal commands for setup and control of the servo drive.

There are three types of ASCII commands:

1.Parameters. Without parameters, these commands are handled as queries. To modify the value of a parameter, the value to be set is added to the command. Some parameters may only be modified under special drive conditions. Query is not restricted to special drive conditions.

2.Variables or system constants. System variables are internally updated in the control, and can not be changed by the user. System constants are fixed (e.g. by hardware) system properties. Query of variables or constants is not restricted to special drive conditions.

3.Methods support control of the system. Methods may or may not require a parameter. Commanding a method to be executed is in some cases also restricted to special drive conditions. Each command is defined as a special mnemonic, which is used for query of parameters, variables and constants as well as for parameter less methods. Modifying a parameter respectively commanding a parameterized method is done by simply adding the parameter value to the mnemonic.

Syntax

General structure of the ASCII command

Each ASCII command is structured in principle according to “Mnemonic” “Delimiter” “Parameter List”. Syntax allows multiple commands in the same string separated by blank space delimiter. Each command string is terminated by a carriage return. i.e. generally, a command string looks like:

“Mnemonic1” “Delimiter” “Parameter List1”... “MnemonicN” “Delimiter” “Parameter ListN” [CR]

Up to 80 characters are allowed at the command prompt.

For each correct command the control returns a “>” sign (ASCII 3E hex) as an acknowledge. If a command is not accepted, the reason for the command revision is sent instead of the acknowledge.

Mnemonics

The mnemonics are not case sensitive. Most of the ASCII commands are grouped into functional groups. The Mnemonics of the commands of parameters, variables and methods of these function groups have a prefix, which indicate the function and, separated by the dot, the command identifier. The general structure of Function Group Commands is as follows:

“Functional Group”.“Command Identifier” “Delimiter”“Parameter list” [CR].

e.g.SYS.MOD 1

All prefixed commands are drive parameters. The delimiter between mnemonic and parameter of these commands is either blank space or equal sign (one of both is mandatory). To query all parameters and variables of a function group, the function group prefix followed by dot and asterisk can be used:

“Functional Group”.*

e.g.SYS.*

MN1851 Command Set B-1