HP 5961-0509 Echo Response, Echo command returns the following response, 16-26Status Readback

If the application sends the Echo command and Free Space command, the printer returns the response to the first Echo command and Free Space command, along with the response to the second request. The application will assume that the response received is the response to its last request. If the application uses random numbers in the Echo command, this type of mix-up will not occur.

Echo Response

The Echo command returns the following response:

PCL

ECHO ValueField

where “ValueField” is the Echo command value field value that was selected (within the range –32767 to 32767).

For example, if the Echo command, EC*s–999X was sent the status response would be:

PCL

ECHO –999

16-26Status Readback EN