Pitney Bowes J640 - Manual (Page 154)

Chapter 8. Status Polling
There are two types of Status Polling:
✦ Inquiry Request--information about the readiness of the
printer
✦ Job Request--information about the current (or last
received) job downloaded to the printer
Inquiry Request (ENQ) ––––––––––––––––––––––––––––––––––––––
An ENQ character acts as a request for printer status
information. You can send an ENQ in front of, in the middle of,
or immediately following any packet downloaded to the printer.
An ENQ is a command that can be executed as part of a data
stream or sent on its own (using a communications program).
An ENQ is processed immediately. The ENQ character can be
user defined.
n
The ENQ character does not appear as a visible character;
however, we are representing the ENQ character as
E
.
St
at
us P
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lling
8-1