Parameter (P) command
Description
(see command description format info here)
| Function: | Sends parameter or instruction to the DS |
| Can be issued through: | Network (broadcasts ignored*, login not required, immediate authentication for this command can be enabled); serial port |
| Command format: | P<relevant data> (see description of individual parameters and instructions for details) |
| Possible replies: | A, C, D, R |
| First introduced: | Earlier than "baseline" V3.14/V3.51 |
| See also: | Parameters and instructions, Authentication |
Details
Command code 'P' (Parameter) serves as a "common entry point" for sending a variety of parameters and instructions .
Network Parameter command can be made to require immediate authentication. To enable this feature:
| • | On-the-Fly Password (OP) setting must be programmed to 1 (enabled); |
| • | Password (PW) setting must contain a password (i.e. a string of non-zero length). |
When two above conditions are met each network Parameter command sent to the DS must contain a password, which is to be added at the end of the command after a slash character.
Example: below is the parameter command that changes the baudrate. The password is "123pwd"**:
-->DS: PBR4/123pwd
DS-->: A
If no password or incorrect password is supplied when the password is expected the Denied (D) reply code is returned.
* Without prior selection using Select In Broadcast Mode (W) command.
** Encapsulation characters such as IEC, STX, CR, and the command ID field are not shown.