7.2.6 Writing to Output Data Objects
Output objects can be written to using the PSP protocol only if the Node has been disabled. If a Host system wants to
initialize (or default) the ProtoCessor’s output objects, the following steps commands must be executed:
• Host systems checks to see when the ProtoCessor started by doing a NS command.
:NS<cr>
• The host system can expect one of the following conditions in response to a NS command.
• No response This will happen while the ProtoCessor is still starting up.
• “ND<cr>” The Node is disabled.
• Host system writes default values to the Output objects.
WD-NA:DA_REG,OF:0,VA:23.9<cr>
• Host system enables the ProtoCessor by issuing the NE command.
:NE<cr>
• Host system checks the ProtoCessor status.
:NS<cr>
7.3 Error Conditions
7.3.1 Format of the Error Response
Errors are reported by the ProtoCessor as follows:
From Host CPU:RD-NA:data,OF:0<cr>
Response from ProtoCessor:ERR0001<cr>
This means error condition 1 has occurred. See the Error Table for details.
7.3.2 Error Response Table
Error Number Error Description
0001
Data Array does not exist
0002
Data Array Offset does not exist
0003
Illegal Format code for FMT - keyword
0004
Corrupted Message
0005
Configuration update (Baud, Node_Id, etc.) failed
ProtoCessor Design Guide 22
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